Channel
@sweet_homotopy
On this record: Growth · Engagement · Reactions · Posts · Citations · Cite this entry
1,448subscribers
+1 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of 1,000–3,162.
| Telegram ID | -1001447163391 |
|---|---|
| Type | Channel |
| Username | @sweet_homotopy |
| Created | 7 April 2020 — measured — cross-checked against a third-party dataset (ext.tg_channel) |
| First recorded | 7 August 2026 |
| Last confirmed live | 14 August 2026 |
| Measurements held | 3 |
| Confirmed unchanged | 1 time, most recently 14 August 2026 |
| On Telegram | t.me/sweet_homotopy |
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 14 Aug 2026, 23:35 | 1,448 | +1 |
| 7 Aug 2026, 22:02 | 1,447 | no change |
| 7 Aug 2026, 12:53 | 1,447 | first reading |
19 posts held, back to 27 May 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 1 pageof Telegram’s post history, 20 posts per page.
ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.
ER is defined industry-wide as (forwards + reactions + comments) ÷ views— note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.
| Window | Rolling 30 days · latest post in window 1 August 2026 |
|---|---|
| Posts held | 19 (27 May 2026 – 1 August 2026) |
| Views total | 3,744 |
| Reactions total | 80 |
| Forwards / comments | not exposed by the public surface — not measured, not estimated |
| Readings taken | 7 Aug 2026, 22:02 UTC |
Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.
Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.
Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.
370 reactions across 19 posts, in 20 distinct kinds. The most used accounts for 21.4% of them.
| Reaction | Count | Share | Share, drawn |
|---|---|---|---|
| 💋 | 79 | 21.4% | |
| ❤🔥 | 63 | 17.0% | |
| ❤ | 52 | 14.1% | |
| custom 5465161243515953033 | 50 | 13.5% | |
| 🥴 | 24 | 6.49% | |
| 👍 | 15 | 4.05% | |
| 🔥 | 15 | 4.05% | |
| 🤯 | 15 | 4.05% | |
| 😢 | 11 | 2.97% | |
| 🏆 | 10 | 2.70% | |
| 😁 | 9 | 2.43% | |
| 👻 | 7 | 1.89% | |
| 🍾 | 6 | 1.62% | |
| 👨💻 | 6 | 1.62% | |
| 👎 | 2 | 0.541% | |
| 👏 | 2 | 0.541% | |
| 🆒 | 1 | 0.27% | |
| 👀 | 1 | 0.27% | |
| 🤔 | 1 | 0.27% | |
| 🥱 | 1 | 0.27% |
Custom emoji. One row above is a Telegram custom emoji, which the public preview renders as an element carrying only a numeric id — no character, and no image we can reach. The id is printed as-is rather than substituted with a look-alike glyph, because a stand-in would be our invention showing where a measurement should be. The count beside it isTelegram’s.
No sentiment is inferred, and none should be read in. This table is ordered by count and by nothing else. Emoji do not carry stable meaning across languages or communities — 🙏 is thanks in one channel and mourning in another — so we publish which ones were pressed and how often, and pass no judgement on what an audience meant by them.
Precision. Telegram publishes reaction counts per emoji and short-forms each one — 4.34K, 1.2M — so any single kind at or above 1,000 reaches us at three significant figures, and only counts below 1,000 are exact. The shares above are ratios of those figures and carry the same error. This is also why the total here can differ slightly from a reaction total printed elsewhere on the page: both are sums of the same rounded parts, taken over samples with different edges.
Coverage. Reactions were read on 19 of the 19 sampled posts in this sample. Summed by Telegram’s own count on each post — not by adding up the per-emoji breakdown above — those same posts carry 370reactions in total: the kind of figure the paragraph above means by “a reaction total printed elsewhere on the page”.
Measured over the 19 most recent posts we hold, published 27 May 2026 to 1 August 2026, using the newest reading held for each. Telegram Stars are excluded: they are a payment, not a reaction, and they have their own section.
слайды я пока не смотрел. давайте тоже выдам чёто про ИИ в математике (и больше к этой теме постараюсь не возвращаться — и так везде обсуждают). в-нулевых, я нейросетями всерьез не пользуюсь (в т.ч. потому что боюсь выработать толерантность к буллшиту (см. также)). это старомодная и во многом иррациональная позиция, но последствия меня ещё не коснулись. скоро коснутся. во-первых, сейчас я всё-таки занимаю ксенофобс…
❤11💋5👎2👏2👻2👍1
(из комментов к https://t.me/tropicalgeometry/1159 )
💋6
https://teorth.github.io/tao-web/slides/age-of-ai-icm-2026.pdf
💋4
Интересная идея, но я думаю лучше исходить из слайдов Т.Тао: что мы хотим от людей с math PhD? Хотим proof digestion. Тогда за это и надо давать PhD
🥴9👍6💋3🤔1
https://zzhang-iu.github.io/papers/direct-consequences-jacobian/
🔥15😢8👍3💋1🥱1
легенды дизайна кстати https://erlagol.ru/arhiv/
❤🔥26🏆10💋5😁3custom 54651612435159530333❤1👻1🤯1
лемма, кстати, — первый шаг вот в каком симпатичном результате So, Theriault: если у (замкнутого ориентированного) четырёхмерного многообразия нет 2-кручения в первых гомологиях, то надстройка у него "наипростейшая возможная" (наличие или отсутствие CP^2 — это вопрос о том, есть ли во вторых когомологиях класс с нечётным квадратом; по формуле Ву это равносильно нетривиальности второго числа Штифеля—Уитни, то есть от…
🤯10❤4💋3👍1
Почему с кручением так не получится? Давайте попробуем победить всю группу π=π_2(Y) сразу. Пришёл, заклеил, запетлил: Y' -> Y -p-> K(π,2), ΩY' -> ΩY -Ωp-> K(π,1). Так как π=π_1(ΩY)=H_1(ΩY), возникает отображение s: M(π,1) -> ΩY (изоморфизм на π_1). Это и есть наше "сечение". Его композиция с проекцией — это стандартное вложение M(π,1) -i-> K(π,1). Если π=Z — эквивалентность, победили. Если π конечна — у пространст…
🤯3💋2
Это кажется мне красивым по двум причинам. Во-первых, конструкция похожа на башню Уайтхеда ("убивание гомотопических групп"), только мы убиваем не всю π_2(Y), а только свободную часть. Но если эта группа свободная, то "первое расслоение в этой башне после запетливания имеет сечение и поэтому становится тривиальным". Во-вторых, для меня было неожиданностью, что сюжет "расслоение такое, что Ωp имеет сечение" проявляе…
💋6
Второе расскажу, первое — упражнение (по аналогии (arXiv:1909.11129, Lemma 5.1)). Y односвязное конечного типа; обозначим k=b_2(Y). Тогда факторгруппа π_2(Y)/Tors(π_2(Y)) изоморфна Z^k. Возьмём гомотопический слой F у композиции p: Y -> K(π_2(Y),2) -> K(π_2(Y)/Tors,2), где первая стрелка — это "заклеивание" старших гомотопических групп. Получается расслоение F -> Y -p-> K(π_2(Y)/Tors,2) и, следовательно, расслоение…
❤7💋2custom 54651612435159530332
окружность — одновременно и пространство Мура, и пространство Эйленберга—Маклейна. Следствия забавные: от надстройки можно отщепить букетом все вторые когомологии, а от пространства петель можно отщепить множителем все первые. (H_2(ΣC) = Tors H_2(ΣX) и H_1(ΩF) = Tors H_1(ΩY) так уже не убрать)
custom 546516124351595303316💋4❤3🤯1
у этой* статьи 3285 цитирований *Maxim Kontsevich. Deformation quantization of Poisson manifolds (2003), arXiv'ная версия (1997)
custom 546516124351595303329❤🔥14😁6😢2❤1👻1💋1
Showing the 12 most recent of 19 posts we hold for @sweet_homotopy. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Citation-graph rank — 615,406 of 1,481,502entries in the measured graph. A weighted position computed from the forward and mention edges below — republished posts weigh more than named mentions — and recomputed periodically, over the whole graph. Published only as this ordinal position, never as a score: a position is a fact, and a score printed beside one channel’s name would read as a verdict this register does not make. The two counts beneath stay separate for the same reason mentions are never summed with forwards anywhere else on this page — a named-by count costs nothing to manufacture. The top 100 by this measure, or how it is computed.
Republished by
Channels on the register that have forwarded this channel's posts into their own feed.
Republishes
Channels on the register whose posts this channel has forwarded.
Built only from forwarded posts we have actually read, on both sides. Coverage is early and deliberately incomplete: a missing link means we have not read the post that would prove it, never that the relationship does not exist. Counts are distinct forwarded posts observed, so they only ever go up as we read more.
Named by 2 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
Names
Channels on the register whose handles appear in this channel's posts.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 14 August 2026 — this entry's latest reading, not the date you are reading this.
“сладко стянул” (@sweet_homotopy), 1,448 subscribers as measured 14 August 2026. Telegram Register, tgregister.com/channel/sweet_homotopy.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.