2026-06-07T09:22:39Z https://yabu.me Nick https://yabu.me/npub1ud2636xg9cp3x2tem5ppz8cpks35teulcqdxeddfwst2t70x20tqfmg5ez https://media.mathstodon.xyz/accounts/avatars/114/015/144/121/491/471/original/da3b244aaabde192.png https://media.mathstodon.xyz/accounts/avatars/114/015/144/121/491/471/original/da3b244aaabde192.png https://yabu.me/nevent1qqspcqh96tmzc60dc2vp2mhnpj5xs02up5c05s903x8g2tua6yzvvcqzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefave396yk In reply to <a href='/nevent1qqsx84fckehjjyq4gzq0e2gyxpyj8ef7ddhf5jh7kkveu25g9054rxsgq0wrk'>nevent1q…0wrk</a><br/>_________________________<br/><br/>Counterpoint: Human ingenuity is sometimes pretty awesome.<br/><br/><a href="https://youtu.be/YdOXS_9_P4U">https://youtu.be/YdOXS_9_P4U</a> 2026-05-26T01:09:23Z https://yabu.me/nevent1qqsx84fckehjjyq4gzq0e2gyxpyj8ef7ddhf5jh7kkveu25g9054rxszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavrtcq6m Current mood:<br/> <img src="https://media.mathstodon.xyz/media_attachments/files/116/637/752/819/618/467/original/855826f77e711749.png"> <br/> 2026-05-25T23:15:45Z https://yabu.me/nevent1qqszy7x7mphm5tkefqkqntqyg2lrxm9wp5s80s2plla2kypeyp6eqxszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavuesrzt In reply to <a href='/nevent1qqsx52x2sscwv7c36zj5wk2wm8xv2pzwc6mp4vcucnn32e4rpfup24g2u8wk9'>nevent1q…8wk9</a><br/>_________________________<br/><br/>It seems very odd for a atheistic biologist to assert that consciousness is &#34;for&#34; anything. Or perhaps he means ...&#34;what the hell is *the word* consciousness for?&#34; 2026-05-04T17:05:56Z https://yabu.me/nevent1qqsz6fxgmxgseah7rpzmc7lw95kvs9930x4q07dq2fc3kg42e9m0ewszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavasyx0n In reply to <a href='/nevent1qqsqe059yuhr8juass0m4x7yupgec2jpz8xymcga7vk2c5h9nstygkcwtmjz0'>nevent1q…mjz0</a><br/>_________________________<br/><br/>Not that I&#39;m saying there&#39;s any relationship whatsoever, but am I the only one that saw the portion of the diagram at left an immediate had Penrose diagrams pop into their head? 😄 2026-04-19T22:34:34Z https://yabu.me/nevent1qqspmazsr9lrm32k00kz98ye89lpr2xp8lzrhhklclv55c0atq0h3lczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavvvynph In reply to <a href='/nevent1qqsxg2g294uf8ye2xk909myhv3cmcd48gud9k2ynykl3ea2n24csaaqckgtk6'>nevent1q…gtk6</a><br/>_________________________<br/><br/>Yes, it for the proving of theorems I can see why &#34;reasoning&#34; would be important. And I agree that the agentic aspect is useful for the other purposes you describe (though with potential drawbacks related to things like security). 2026-04-18T21:29:22Z https://yabu.me/nevent1qqs2e3phkeg9x2el46p5upcxxrxq583vq3cqakt2j2fcp40zmuvc80szyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavtzzxan In reply to <a href='/nevent1qqs03x94xp6yzglk4mx7kq4us28zpjkkxy0p6c0hzuq4qq28cx4d27g80qysq'>nevent1q…qysq</a><br/>_________________________<br/><br/>You said &#34;I suspect you have not used modern agentic AI tools to solve advanced math problems.&#34; Is the agentic aspect important here? I would have thought this would be more of a good old fashion LLM type of problem (produce the text of a proof in response to the a description of what it should contain), but perhaps there are aspects here I don&#39;t understand. 2026-04-18T20:46:14Z https://yabu.me/nevent1qqsyarmt5qywge04qw4nrvvyhk3sx65x3v8kl3n7nzfvtnyze2peqqqzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavq92y28 In reply to <a href='/nevent1qqsya0685z2fyd7ne9t0m9dvv7q4m35akfwqfcummrrwsramgzyr0kqwvfdn7'>nevent1q…fdn7</a><br/>_________________________<br/><br/>This seems to be a result no one can make immediate use of, so I don&#39;t see how &#34;responsible disclosure&#34; applies. 2026-04-05T01:14:59Z https://yabu.me/nevent1qqsw88hr2k42gjue5g6alm4j2xfytmr46maznr509nneaevtgws0n0szyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav44503z A question for science and engineering folks: What&#39;s your go to desktop software for easily plotting data (say multiple series containing up to 100000 points each)? (Note: not a cloud service unless it&#39;s implemented fully client side in JS or something.)<br/><br/>My current go to is probably a spreadsheet or matplotlib in Python, but I would not call either ideal. 2026-02-11T01:33:25Z https://yabu.me/nevent1qqsr7d86fgkz5nl94ln237wgnuqhxkjkt2sem9hu2uzpszu22n8c6ugzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavgnjnda In reply to <a href='/nevent1qqs8v8ts0tnaxet3fckcxe6sp2hvmvvqpnkwrq5cupsnyply3ufy4wsyk7sx9'>nevent1q…7sx9</a><br/>_________________________<br/><br/>I think I have similar frustrations to yours [@j_bertolotti](<a href="https://mathstodon.xyz/@j_bertolotti">https://mathstodon.xyz/@j_bertolotti</a> ). I remember many years ago when I heard some traditional Chinese music for the first time, and hearing that in comparison to the European-derived music I was used to made plain to me how much of what we think of as &#34;the way music works&#34; is historically or culturally contingent. It seems to me that music theory arises from three things, math/physics, intrinsic human psychoacoustic perceptual characteristics, and cultural conventions. But most of the discussion of music theory doesn&#39;t seem to distinguish which is which, and I find that rather confusing.<br/><br/>I suspect that if I spent more time reading music threads by <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1nf4p4rh06z6n6lsvje4txk7eqs23y3hs8vd7nraq6tgwady5qvsqy3nqe4" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>John Carlos Baez</span> (<span class="italic">npub1nf4…nqe4</span>)</a></span> I might be able to resolve some of that confusion, though. 2025-12-26T18:24:16Z https://yabu.me/nevent1qqstgjzjcwhnep0rdf0xeyex3gfksf5emk6x2t50lvg958s2jpcmxwgzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavp5juns In reply to <a href='/nevent1qqsxj26g5tdyh0f9l9y05ycefsc0akk0agsmw4mzss52jpzuvy5wlnswc8zn5'>nevent1q…8zn5</a><br/>_________________________<br/><br/>This just makes me think of when I was teaching physics, and I had pre-med students taking the course who were trying to prepare flashcards as a study aid. But, yes, prizing memorization seems even more absurd in that context. 2025-11-04T06:01:39Z https://yabu.me/nevent1qqst264flpdsvrh393cxe4r2ca93yzg59ytttpwn437lvzelyr49sqczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav3e397r In reply to <a href='/nevent1qqsvv7z857cskqzx92wp7vlhwjc9yp3rr600wksxsdqqjhyquckfrnqlgj95u'>nevent1q…j95u</a><br/>_________________________<br/><br/>We were losing the youths with the whole &#34;it&#39;s like email&#34; analogy, but &#34;it&#39;s like the printing press&#34; should be a lot more relatable. 😉 2025-10-24T17:53:21Z https://yabu.me/nevent1qqspttupauu2qrettj3h7xc2vuycgnx7rqxxgfxgyjpqy0gd5nrf5cgzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav8frpe8 In reply to <a href='/nevent1qqsyl2572yhynlw0ny2suvx4vqhvg7x07hup27nzjgn50kkw84xtqqcjj4q5f'>nevent1q…4q5f</a><br/>_________________________<br/><br/>The other article I pointed to elsewhere in this discussion invoking negative mass particles to explain cosmological observations references a paper by Bondi in Rev. Mod. Phys.<br/><br/><a href="http://ayuba.fr/pdf/bondi1957.pdf">http://ayuba.fr/pdf/bondi1957.pdf</a><br/><br/>I only took a cursory look, but it seems to construct a Weyl metric from a gravitational potential function, which has opposite sign for the &#34;negative&#34; mass. While he doesn&#39;t explicitly address the stress-energy tensor, and I haven&#39;t tried to calculate it, I would guess that implies a particle with negative rest energy.<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1hy7207kjac305exy8pkj8u6cl2ssz46jnrfluzg306vueaevz83s460nqq" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>iwein</span> (<span class="italic">npub1hy7…0nqq</span>)</a></span> 2025-09-27T03:01:06Z https://yabu.me/nevent1qqsrvl29twvqfp0zxmgnwmdqkpyjpc2qly7u7knc534tu4ed6ulyegszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavq83ava In reply to <a href='/nevent1qqsrl3clglnu02g42msv40afycy00r28x3n3wlq2feu6yvp50x5flkczhrmd4'>nevent1q…rmd4</a><br/>_________________________<br/><br/>I see. I guess I didn&#39;t remember enough of the little particle physics I do know to remember that only a finite number of interaction terms are physically allowed (i.e. that you can&#39;t keep introducing terms with higher powers or derivatives of the various fields into the Lagrangian). 2025-09-21T18:26:02Z https://yabu.me/nevent1qqsy62dfj8r8f5wpksl4denkl6347n580ake58p9uck9ek5fnlkz6rgzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavtfy2hq In reply to <a href='/nevent1qqs9crkvftkj70vpgv2amk9etxzvsw96thjr7mppts3wrgtdhhkn5pgcfuhqx'>nevent1q…uhqx</a><br/>_________________________<br/><br/>Sorry, I never got very far in particle physics, so this is probably a very naive question, but what is the meaning of &#34;complete&#34; in this context? I would have assumed just &#34;describing all physical phenomena,&#34; but it seems like maybe it&#39;s being used to mean something different. 2025-09-21T15:08:22Z https://yabu.me/nevent1qqsppdsmtdq5faje80y4xv77d603rakh0v5fr0x3hdjt7ldqfxgawuszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav5azwzq In reply to <a href='/nevent1qqs9qsn2xy39gwgc4peqxk2cqrq6uqfjm2cfm3nsq0mhcp2fj2engtqe6lhuv'>nevent1q…lhuv</a><br/>_________________________<br/><br/>Agreed. And that older paper sort of does the opposite, it introduces two strange new mechanisms at once! 2025-09-05T12:19:48Z https://yabu.me/nevent1qqsvr8egj4l7vszq84q9j0rwnduwxg9lyx6vfrju6g78jp5qaujqx6gzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavta43c0 In reply to <a href='/nevent1qqsgt5n387uzjgt57hxlzg54lnwl73el69cpqw5fjhcguel0pa49t6gnzfexk'>nevent1q…fexk</a><br/>_________________________<br/><br/>Interestingly this put me in mind of a different paper I&#39;d seen some time ago that also purported to explain dark energy via negative mass particles. It&#39;s been a long time since I read that and I have not yet looked very closely at the one <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1glgxnwfzwxpvj3l6d96vxttum7rkfav3dmcwdkyqz9eqkt83mdfsaxtqzy" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>Bartosz Milewski</span> (<span class="italic">npub1glg…tqzy</span>)</a></span> linked to, but I think the older paper I saw was more radical, proposing that negative mass particles would also pop into existence via the addition of a &#34;creation term&#34; to GR.<br/><br/><a href="https://arxiv.org/abs/1712.07962">https://arxiv.org/abs/1712.07962</a> 2025-09-05T03:48:19Z https://yabu.me/nevent1qqsxu59zm9qvm7dt9eh9hh08uevlrl272hdmplf7360hckcfaac8hlczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavw87l2w A friend found a tab open in Safari on their iPhone that they had not (knowingly) opened and whose history indicated it had visited a succession of locations, including multiple web searches and several different websites (some related to the web searches, some not). What are the likely ways that this could have occurred? Could this indicate a larger problem?<br/><br/>My best guess is that a site they opened had ads from some ad network with malvertizing on it that opened the extra tab and caused it to visit the various locations, but I&#39;m really not sure.<br/><br/>#infosec #security #malware #iOS #iPhone 2025-08-27T01:24:07Z https://yabu.me/nevent1qqst3asm5n48mf7s2rpj05rgf99ww6vycj20xw3sk4m0eza0nrxxkgqzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav3d6tyn In reply to <a href='/nevent1qqsxww5cfclcd40yczc82dhd7uyzptpy9axqfpv89lwwdsthl7775dqzt4em3'>nevent1q…4em3</a><br/>_________________________<br/><br/>I&#39;m probably missing something important here, but I guess I would have thought they still have to be equal due to Łoś&#39; theorem. 2025-07-29T22:32:36Z https://yabu.me/nevent1qqsprzzn9lwe6t3lcyc7zl6clmrqgt0ux0gf2fdfw0pam7x6kfsxnmszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavqq4z6g It&#39;s been reported over the last couple years that the contents of push notifications were accessible by the mobile providers who ran the push notification services and were being subpoenaed by various governments (meaning they could also fall into the hands of other parties in the case of a breach).<br/><br/>I had read that mobile applications can take steps to protect the content of notifications (either encrypting them or making them nothing more than a &#34;check the server&#34; message to the application), but I have no idea how to figure out which applications may be protecting notifications. Do people try to keep lists of this (even incomplete ones)?<br/><br/><a href="https://www.404media.co/apple-gave-governments-data-on-thousands-of-push-notifications/">https://www.404media.co/apple-gave-governments-data-on-thousands-of-push-notifications/</a><br/><br/>#infosec #mobileDev #security 2025-07-28T00:30:32Z https://yabu.me/nevent1qqsvzj7e5xgdwwhfpp8mjc2m4u4vjhl5rcw027v58v5u0cse72pfgaqzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavve8seg In reply to <a href='/nevent1qqsqn6jumnfxlehdrsfkl8um00hd90dttqtg7qxcg6xl3axy9f6x28qw73886'>nevent1q…3886</a><br/>_________________________<br/><br/>They&#39;re also quite light to carry and preternaturally quiet. 2025-07-21T13:11:47Z https://yabu.me/nevent1qqswtx6weaz7k3766swhxvhp002yzz90chxp2ustp9vejsz5h64dx2qzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavajh5f5 In reply to <a href='/nevent1qqsvvgnpl49n4d0z6wm0yc0v060672tlaxdsj3y709ajlm2ut9ltm0s90590v'>nevent1q…590v</a><br/>_________________________<br/><br/>For a second I thought, &#34;are we doing superluminal neutrinos *again*!?&#34; But now I see this is just the previous instance I was aware of.<br/><br/>I was teaching a course in lab methods and data analysis at the time, and I used this as a running example of how to evaluate the agreement of experiment and theory, the role of systematic error, and the fact that you as a scientist should be the first and most dedicated skeptic of any apparently miraculous result you come up with. 2025-07-08T05:34:21Z https://yabu.me/nevent1qqsdxpal7nfp9nuzx8m8cy3mlrj2aqnnjms945d3h6wmv6z0uxy9a8szyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavgktasa In reply to <a href='/nevent1qqsxqst2wjgzkdgmm7m7yuv3yfuz75fhhlxysc0hgvecp080hw9njuqknuq5g'>nevent1q…uq5g</a><br/>_________________________<br/><br/><span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1n4n59l6ryd0t26xqh32l4zk00cqyegr20j0qc0dzkzy6px9hdxusru6ax6" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>nixCraft 🐧</span> (<span class="italic">npub1n4n…6ax6</span>)</a></span> I&#39;ve had pretty good luck with GrapheneOS so far (over 3 years as my only phone) . The Play Integrity thing can be an issue in principle if some app you depend on happens to block your phone based on it. In practice the only issue I&#39;ve run into personally is with the Authy 2FA app. In that case I just switched to a different authenticator, which was an improvement anyway.<br/><br/>But other people have been bitten by it; we were discussing in another thread:<br/><br/><a href="https://helvede.net/@m/114748864059804840">https://helvede.net/@m/114748864059804840</a> 2025-06-28T01:03:17Z https://yabu.me/nevent1qqs08vfn995suuh5rplhtarl88enfdu8u6vu6tjhqc5x34n6he4pv9gzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav5saqss In reply to <a href='/nevent1qqsfq7qhmthp573nyq9gd45cxmy5skjg2yk9ll8f0qu9lus5ampsdacdyc38w'>nevent1q…c38w</a><br/>_________________________<br/><br/>The stages of thought I went through reading this post:<br/>1. Why do you need all that!? Just use the geodesic equation.<br/>2. Oh, you mean a *non-infinitesimal* (and possibly charged) mass, so you have to worry about radiation reaction! Sounds interesting.<br/>3. Wait...won&#39;t a massive point particle in GR (at least below a certain charge and angular momentum threshold) be a microscopic black hole?<br/><video controls width="100%" class="max-h-[90vh] bg-neutral-300 dark:bg-zinc-700"><source src="https://media.mathstodon.xyz/media_attachments/files/114/632/283/581/761/566/original/9c5d78c8b56bcc52.mp4"></video><br/> 2025-06-05T19:01:23Z https://yabu.me/nevent1qqs9jryh5l3e2scc5fpxys25cj4x0u23hzw9gjtg4z2uhmaslcpv06gzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavf7j4hh In reply to <a href='/nevent1qqsqv9m3ea6yn45avsc7z9gstu2uamjexl6dqatpqc3zny3vadd7lcc9ld8z3'>nevent1q…d8z3</a><br/>_________________________<br/><br/>Maybe <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub1kmxm4n6wsawq7v5zne5tr6a94f7gmlck74fhxxz7k3te6edtvugsuaxxhr" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>plasmaphysics</span> (<span class="italic">npub1kmx…xxhr</span>)</a></span> will want to get in on this discussion. 2025-05-20T18:00:15Z https://yabu.me/nevent1qqsp4f7t07qym8wdwr9960u4am6av0xuvq2r8wyhdsf09lqgt0skuaczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav9xgz79 In reply to <a href='/nevent1qqsrnz2u5st8tc66rxv373n3pqfnvpm8dfqp745zjwe5scqyvkr5m8q63nmy4'>nevent1q…nmy4</a><br/>_________________________<br/><br/>Yes, that&#39;s true. I once had someone ask me to help refute Electric Universe/Plasma Cosmology nonsense (because they knew someone who believed it), but when I tried to look into the claims they were just incoherent. You could point to various statements that were baseless or implausible, but it wasn&#39;t really even clear enough to say what precisely was the claim to be refuted. 2025-05-18T12:03:21Z https://yabu.me/nevent1qqsp6ve7lfqldnh4fjyg3nkwqak7wne9yxed9wv2hd6u5h995k4s3mszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavkcr9sx In reply to <a href='/nevent1qqspaep5j6yhjk7djme5f2jx00m4xm898v4qqrrnq3p92cxhd2auuash89l35'>nevent1q…9l35</a><br/>_________________________<br/><br/>I know that they&#39;re inherently bad at math (because they&#39;re just spitting out sequences of tokens that are probable based on their training set), but I thought some had implemented a kludge where when the LLM recognizes a math problem it writes code to solve it (something it *can* do, to a degree) and runs the code to get the answer to the problem. 2025-05-18T11:44:18Z https://yabu.me/nevent1qqsrp9px5g6kyrnvp8nhccnh4l9lvndfzpwtffalzs5mwgpf7fp2tjgzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavx68agn In reply to <a href='/nevent1qqszmzttwg8w0w4mrjsflv4xs3fdtz65gjt3f7h74tdxsfsgcg5hafq8lma2y'>nevent1q…ma2y</a><br/>_________________________<br/><br/>I know a common crackpot trope used to be &#34;I have this revolutionary theory. I just need someone to do the math for me.&#34; I wonder if the LLMs have now gotten good enough at math to solve that problem for them. 2025-05-18T11:31:39Z https://yabu.me/nevent1qqs843p0zzv9xrlt4cz592ydxu9dq6meczhxfmsc8h0l9795cdnjd8czyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav0d0h5a In reply to <a href='/nevent1qqsyzu4l6wkn89wgdwhygd94d0urlg7yldq59kyj9aftwa2rw6z3fhgy53v2v'>nevent1q…3v2v</a><br/>_________________________<br/><br/>Yeah that was the bit that also raised my eyebrows. Using power series and then truncating them is your big insight!?<br/><br/>Also notably lacking in the article were quotes from other researchers in the field not involved in the research. 2025-05-04T17:11:37Z https://yabu.me/nevent1qqszt6j6s48t0mnjuelzrs6w3x83lhy3f87hzq2fcvfu0tvp2m9kkwszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavg5gcwk In reply to <a href='/nevent1qqs9ul97msyafcnn69kfcc6w5e4yx2nq9nfhe4ke5q6q28xr38twtlszl4qjk'>nevent1q…4qjk</a><br/>_________________________<br/><br/>Yes, I agree that if you&#39;re teaching a class or having a more in-depth discussion and have equipment at hand, you can go the empirical route (as <span itemprop="mentions" itemscope itemtype="https://schema.org/Person"><a itemprop="url" href="/npub19xgnk2z7na63kfjhhfkuxgp8hmkfh3g4azdglruqx5y9cn4xhqtsvy9xct" class="bg-lavender dark:prose:text-neutral-50 dark:text-neutral-50 dark:bg-garnet px-1"><span>fl</span> (<span class="italic">npub19xg…9xct</span>)</a></span> also suggested). I guess I was thinking more about the context where you&#39;re speaking in brief (without props) and just trying to convey the most basic idea of what polarization is in a few sentences. 2025-04-20T15:37:22Z https://yabu.me/nevent1qqs9zux96973dzl39zdv0xt68ffhs76grte7t97ga9rrsk8v98z836szyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavgu7t8s I&#39;m curious if anyone has found a good, succinct way to explain light polarization to someone who has no formal knowledge about electricity and magnetism.<br/><br/>I find this vexing, because polarization is conceptually pretty simple: it&#39;s just about the direction in which a transverse wave does the waving. So it&#39;s easy to explain if you&#39;re talking about, say, waves on a string. The problem is that what is doing the waving here, the electromagnetic field, isn&#39;t really familiar to most people (if they haven&#39;t taken some physics classes). I&#39;ve tried before to give explanations that sort of talk around the &#34;what exactly is doing the waving&#34; angle, but then the explanation just sounds oddly vague or abstract.<br/><br/>I&#39;ve also talked to other people who have had the same problem, so I suspect there just isn&#39;t a very good way, but maybe someone out there has come up with a particularly clever way to approach it. 2025-04-19T16:48:27Z https://yabu.me/nevent1qqsqdeuxrqh3qcznyrfgnk9cvjl8lh5ah8w8erknh4z4tpphshs30zszyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavhnt7k5 In reply to <a href='/nevent1qqs2fc20jzw8q5kg3sx9uv3wgvf8pkfhrpk9nwm5dm3k5n84ge652ngt04v9k'>nevent1q…4v9k</a><br/>_________________________<br/><br/>Do these actually work on up-to-date iPhones? I know I&#39;ve seen a lot of claims about tools to gain access to mobile devices that then turn out to only actually work on older OS versions (presumably old enough to have known exploits). 2025-03-26T04:39:39Z https://yabu.me/nevent1qqsr3mnrq9uu7ma8s96vs6uwdvd94qd05f5jsq839wxzqfd6ujxktaczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefav94nzhq In reply to <a href='/nevent1qqszanc9sqmjjztmwh0780cq7a43wfm60k0grydy2emv66psncx78hck68c29'>nevent1q…8c29</a><br/>_________________________<br/><br/>I guess the sneakers McGuffin didn&#39;t seem so absurd to me (modulo details about how you interface to specific systems/ciphers) mostly because I didn&#39;t think that they went into much detail about how it worked other than &#34;advanced math&#34;. <br/><br/>In my head I guess I just figured you could imagine it could be as simple as an chip implementing a novel algorithm that solves discrete logarithms in polynomial time. 2025-03-07T17:01:02Z https://yabu.me/nevent1qqsv3nhqcegmn6clpe3kssr9jxxk8r92u7xcfnxk3472ynvq04y53kgzyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavfge6h8 In reply to <a href='/nevent1qqsv0fyuvyqsq433vggff960vv8l3p5u2629nwg9j7adkj433j9pw2c4fnfge'>nevent1q…nfge</a><br/>_________________________<br/><br/>Now that&#39;s service! 😂 2025-02-22T23:58:15Z https://yabu.me/nevent1qqs2lsxvc2c6a85a949shlwpzefz0v9x7sd20mlyq5sa6ztlvtytdlczyr34t28geqhqxyef08wsyyglqx6zx308nlqp5m94496pdf0euefavtltcfp So as an appropriately mathy post for my first post after migrating to Mathstodon: I was reading the Wikipedia article on PRNGs, and it talks about &#34;a probability distribution on \( \left(\mathbb {R} ,{\mathfrak{B}}\right) \) (where \( \mathfrak{B} \) is the standard Borel set on the real line).&#34; What is &#34;the standard Borel set&#34;? I&#39;m guessing that they really mean the σ-algebra of Borel sets on the real line (which I might call &#34;the standard collection of Borel sets&#34;), or does this mean something else? 2025-02-22T23:50:02Z