Channel
@upstairs_math
On this record: Growth · Engagement · What this channel posts · Posts · Citations · Cite this entry
101subscribers
+0 since we began measuring on 7 August 2026
Risers and fallers across the register · movement among entries of Under 1,000.
| Telegram ID | -1001252110609 |
|---|---|
| Type | Channel |
| Username | @upstairs_math |
| Description | @kondratjew239 upstairs.one |
| Created | 22 April 2020 — measured — cross-checked against a third-party dataset (ext.tg_channel) |
| First recorded | 9 August 2026 |
| Last confirmed live | 9 August 2026 |
| Measurements held | 2 |
| On Telegram | t.me/upstairs_math |
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 9 Aug 2026, 10:32 | 101 | no change |
| 7 Aug 2026, 20:02 | 101 | first reading |
20 posts held, back to 11 August 2024 — 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.
Nothing published in the last 30 days. ERR and ER are rolling 30-day measures, so there is nothing to compute — we hold 20 posts for this entry, the most recent from 4 November 2024. An engagement rate over an empty window would be a number about nothing.
Lifetime counters from Telegram’s own channel header, read 9 August 2026 — not the date at the top of this page, which is when the subscriber count was last read. Below Telegram’s rounding threshold, so these counts are exact.
https://math.ucr.edu/home/baez/week259.html «This week I'll talk about the “field with one element” - even though it doesn't exist. It's a mathematical phantom...»
Signed Вова Кондратьев
Бросился в глаза один из ответов: I have an inkling of why he hit a ceiling and what it is. In lower levels you could coast by in maths just by vibes (intuitive understanding of math concepts). In higher levels the intuition does not come for free. [..] If you simply read the proofs passively, you will hit this ceiling, as reading passively does not improve your mathematical maturity. It's like going to the gym but…
Signed Вова Кондратьев
https://youtu.be/Qk5IEmTrYeM в качестве картинок по выходным — мультфильм про правильные четырехмерные многогранники
Signed Вова Кондратьев
17 доказательств теоремы о биссектрисе Речь о свойстве биссектрисы ВD треугольника АВС, а именно АD/DС = АВ/ВС. Умеете доказывать? Если что, вот четыре доказательства, а вот еще тринадцать
Signed Вова Кондратьев
Вниманию юных математиков и их родителей! Темы занятий на неделю 14.10-20.10 для математических групп открытого и конкурсного направлений: ✅ Группы 5-ти лет Симметрия ✅ Агентские группы Н – Интервалы 1 - Интервалы 2 – Передача 3 - Время 4 – Календарь ✅ Олимпиадные группы 1 – Интервалы 2 – Разнобой / Разрезать по клеткам 3 – Разнобой / Разрезать по клеткам 4 – Принцип Дирихле/ ШГН – 6. Длина, периметр ✅ Курс «…
Signed Вова Кондратьев
https://www.perplexity.ai/
Signed Вова Кондратьев
Гайз никто так мое доказательство не смотрел https://gist.github.com/godcodehunter/750ab86eacb426b15581ed1357df3990 ?
Signed Вова Кондратьев
File, posted without a caption
Signed Вова Кондратьев
напомним еще про https://www.simonsfoundation.org/2012/06/19/pierre-deligne/
Signed Вова Кондратьев
⚡️ Публикуем разбор разминки №22 «Клетчатый многоугольник» от Дениса Владимировича Афризонова: https://www.youtube.com/watch?v=LZNlAcWm564 ❗️PS. Также обратите внимание на нашу аналогичную рубрику для младшеклассников! Разминку №7 «Круги Эйлера» для начинающих можно найти тут. #мт_разминка_продолжающие #разбор Подписаться на «Математические кружки»
Signed Вова Кондратьев
Дима Каледин, математик (старожилы русского интернета могут знать его имя по старому ЖЖ), опубликовал 600-страничную статью , в которой описывает новый подход к абстрактной теории гомотопии, над которым он работал много лет. Он предлагает этот подход в качестве альтернативы популярной в последние 20 лет теории категорий бесконечных порядков Джейкоба Лурье. Я совершенно некомпетентен в этих вопросах и не имею собстве…
Signed Вова Кондратьев
Приглашаем на бесплатный онлайн-курс Санкт-Петербургского государственного электротехнического университета «ЛЭТИ» «Дискретная математика». В этом курсе вы изучите несколько сюжетов дискретной математики и узнаете основные определения и свойства объектов теории чисел, комбинаторики, булевых функций, бинарных отношений на множествах. Кроме этого, вы научитесь осуществлять вычисления и преобразования, связанные с э…
Signed Вова Кондратьев
Showing the 12 most recent of 20 posts we hold for @upstairs_math. 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 — 1,149,276 of 1,169,250entries 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.
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 9 August 2026 — this entry's latest reading, not the date you are reading this.
“Математика” (@upstairs_math), 101 subscribers as measured 9 August 2026. Telegram Register, tgregister.com/channel/upstairs_math.
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.