Dan Christensen✓ Add us as a preferred source on Google
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Make a deal with Dan Christensen
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
487
Account age
3 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🎁 Free analysisfor Dan Christensen
📊 Post engagement
Recent posts · likes + reposts
Sep 19latest
14
Avg engagement / post
9–17
Typical post (engagement)
2.9%
Engagement vs followers
79/100
Very consistent reach
Oct 2022
On Mastodon since
Half of recent posts land between 9 and 17 likes + reposts (median 13) — a dependable floor a sponsored post can count on.
🔥 Top post: This week the #HoTTEST seminar presents: Axel Ljungström A forma · 26 likes + reposts
📊 Activity & format
Posting cadence
0.41 / week
A lower-frequency account — each post lands with more weight.
Content mix
Mostly text
Recent: 11 text · 1 image · 0 video.
Follower / following
9×
Follows 54 back. A strong ratio — an audience that follows them, not a follow-for-follow network.
Recent posts
View on Mastodon ↗
This week the #HoTTEST seminar presents:
Freek Geerligs
Synthetic Stone duality
The talk is at 11:30am EDT (15:30 UTC) on Thursday, April 16. The talk will be 60 minutes long, followed by up to 30 minutes for questions. See https://hotte…
This week the #HoTTEST seminar presents:
Szumi Xie
The groupoid-syntax of type theory is a set
The talk is at 11:30am EDT (15:30 UTC) on Thursday, April 2. The talk will be 60 minutes long, followed by up to 30 minutes for questions. See…
This week the #HoTTEST seminar presents:
Astra Kolomatskaia
Displayed Type Theory, intervals, and analytic higher categorical structures
The talk is at 11:30am EDT (15:30 UTC) on Thursday, March 19. The talk will be 60 minutes long, follo…
This week the #HoTTEST seminar presents:
Bastiaan Cnossen
Synthetic category theory in CaTT
The talk is at 11:30am EST (16:30 UTC) on Thursday, February 19. The talk will be 60 minutes long, followed by up to 30 minutes for questions. Se…
I forgot to announce this week's #HoTTEST seminar ahead of time, but the talk is now live on YouTube, so you can watch it there: https://youtu.be/dCOZGKbSQSo
Talk info:
Benedikt Ahrens
A type theory for comprehension categories
Abstract:
…
This week the #HoTTEST seminar presents:
Matteo Spadetto
Different descriptions of the semantics of computation axioms
The talk is at 11:30am EST (16:30 UTC) on Thursday, December 4. The talk will be 60 minutes long, followed by up to 30 …
This week the #HoTTEST seminar presents:
Stefania Damato
The Groupoid CwF of Containers
The talk is at 11:30am EST (16:30 UTC) on Thursday, November 6. The talk will be 60 minutes long, followed by up to 30 minutes for questions. See htt…
This week the #HoTTEST seminar presents:
Greg Langmead
Discrete differential geometry in homotopy type theory
The talk starts in five minutes: 11:30am EDT (15:30 UTC) on Thursday, October 9. The talk will be 60 minutes long, followed by …
The #HoTTEST seminar begins its fall season with the following talk:
Jon Sterling
Is it time for a new proof assistant?
The talk is at 11:30am EDT (15:30 UTC) on Thursday, September 25. The talk will be 60 minutes long, followed by up to …
The Fall 2025 HoTTEST lineup
The HoTTEST organizers are pleased to announce the Fall 2025 lineup for the Homotopy Type Theory Electronic Seminar Talks (HoTTEST). The speakers are:
Sep 25: Jon Sterling
Oct 9: Greg Langmead
Oct 23: Axel Ljun…
I made my own chalk brush! (And it seems worth reposting a chalk-related photo I took last year.)
I made my own chalk brush! (And it seems worth reposting a chalk-related photo I took last year.)
🐘 Community & instance
Home server
mathstodon.xyz
Their home server on the fediverse — the instance a creator picks signals the community they belong to.
✅ Link-verified
Verified link
Proved ownership of a website linked on their profile — Mastodon's green-check verification, a real identity signal rather than a paid badge.
On Mastodon since
Oct 2022
Joined in the Twitter-exodus wave of late 2022 — part of the migration that made Mastodon a real destination.
💡 Facts
🗓️Joined Mastodon in 2022 — 3 years ago.
👁️Averages 14 views per post.
📤Posts about 0.4× per week.
🕵️ Fake follower check
Estimated75/100
Good
Credibility score
92%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 92% real, active audience · Low fake-follower risk.
- Engagement (~2.9% of followers engage each post) is around typical for Mastodon.
- Verified account.
- Established account (3+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
I'm a mathematician at the University of Western Ontario. I'm interested in homotopy theory, higher categories, homotopy type theory, and many other things.
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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15%
Liesbeth van de Grift
15%
Tyson, Chicken Rancher 🐓
14%
Johannes Hentschel
14%
David Paredes
13%
Arthur P. Dent
13%
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Johannes Hentschel ✓
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Followers
Frequently asked questions
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Dan Christensen has 487 followers on Mastodon.
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