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167
Account age
3 yrs
💰 Suggested sponsorship rate
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🎁 Free analysisfor Paul Schwahn
Known for
46 views
My colleague Misha Verbitsky over at IMPA, one of the top mathematicians of Brazil, is being detained in Armenia because Russia has designated him a terrorist after his comments on the war in Ukraine.
https://caliber.az/en/post/russian-mathematician-wanted-on-terrorism-charges-detained-in-armenia
This is surreal to me, given that I met him just a month ago.
Please consider signing and sharing the
15 views
UPDATE: Verbitsky has been released from prison and allowed to leave Armenia!
https://meduza.io/en/news/2026/06/15/russian-math-professor-freed-in-armenia-after-moscow-fails-to-file-proper-arrest-paperwork
10 views
poor 𝑆²×ℝ 😢
1 views
Life is going to hell in thousands of ways, but at least I got myself some nice drip from my university.
📊 Post engagement
Recent posts · likes + reposts
Jan 28latest
16
Avg engagement / post
4–17
Typical post (engagement)
9.6%
Engagement vs followers
47/100
Variable reach
Jul 2023
On Mastodon since
Half of recent posts land between 4 and 17 likes + reposts (median 10) — reach is spiky, driven by the occasional post that pops.
🔥 Top post: They made the isospectral drums https://prismika.github.io/2026/ · 65 likes + reposts
📊 Activity & format
Posting cadence
0.6 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 8 text · 4 image · 0 video.
Follower / following
1.3×
Follows 130 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
UPDATE: Verbitsky has been released from prison and allowed to leave Armenia!
https://meduza.io/en/news/2026/06/15/russian-math-professor-freed-in-armenia-after-moscow-fails-to-file-proper-arrest-paperwork
I must add that I am not completely happy with the petition itself: the text reads somewhat generic, there is no call to action to the Brazilian authorities, and I don't like change.org. But I still found it worth sharing.
My colleague Misha Verbitsky over at IMPA, one of the top mathematicians of Brazil, is being detained in Armenia because Russia has designated him a terrorist after his comments on the war in Ukraine.
https://caliber.az/en/post/russian-mat…
Two exciting preprints on the arXiv this week, both about Einstein metrics!
P.-A. Nagy has worked out the third variation of the Ricci tensor with respect to the metric (a long-standing computational problem). This enables us to study thir…
poor 𝑆²×ℝ 😢
I must admit that I never understood the theorem statement of geometrization of 3-manifolds: every (smooth, compact, connected, orientable) 3-manifold (with boundary a disjoint union of tori) "decomposes" into "geometric pieces".
But what …
"G₂-structures as Octonion Algebras", by Isak Sundelius
https://arxiv.org/abs/2604.15966
In this article G₂-structures on a 7-manifold 𝑀 are interpreted as octonion algebras over the ring of smooth functions on 𝑀! More precisely, the categ…
"The fundamental group of a spherical space form is not audible", by Mauro Colantonio and Emilio A. Lauret.
A spherical space form is a complete Riemannian manifold of constant positive (sectional) curvature. The universal cover of a spher…
Unlike their French colleagues, the German Mathematical Union (DMV) will not boycott the ICM 2026, as I was informed via email.
They refer to a statement of the local organizing committee. I take the liberty to take one line out of context…
Life is going to hell in thousands of ways, but at least I got myself some nice drip from my university.
@johncarlosbaez @highergeometer
Our original question was: is there an element h∈𝐻 such that h₁₂ preserves ℍ, while h₂₃ maps the complement of ℍ to ℍ? We can now try to answer that using the above identification and realization of Spin(8)…
🐘 Community & instance
Home server
mathstodon.xyz
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
On Mastodon since
Jul 2023
An established account with real history on the platform.
💡 Facts
🗓️Joined Mastodon in 2023 — 3 years ago.
👁️Averages 16 views per post.
📤Posts about 0.6× per week.
🕵️ Fake follower check
Estimated80/100
Excellent
Credibility score
97%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 97% real, active audience · Low fake-follower risk.
- Strong engagement (~9.6% of followers engage each post) — an active, real audience.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
💚 Brand affinity
EstimatedBrands Paul Schwahn's audience is most likely to respond to — from detected sponsorships in this niche.
About
Sometimes I do differential geometry.
📸 Gallery
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