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Make a deal with Sang-il Oum
🔒 Paid proposals held safely in escrow — released only when the work's approved.
Followers
159
Account age
7 yrs
💰 Suggested sponsorship rate
$40 – $65 / sponsored post
Estimated from audience size & typical reach — every deal is negotiable and held in SocialDB escrow.
🧰 Free analysis for Sang-il Oum
📊 Post engagement
3
Avg engagement / post
1.9%
Engagement vs followers
Nov 2018
On Mastodon since
🔥 Top post: I have written an exposition of a proof of the cycle double cove · 7 likes + reposts
📊 Activity & format
Posting cadence
8 / week
Toots daily — consistently active for a campaign window.
Content mix
Mostly text
Recent: 12 text · 0 image · 0 video.
Follower / following
1.9×
Follows 82 back. A more reciprocal / networked account.
Recent posts
View on Mastodon ↗
#New_accepted_paper
*O-joung Kwon* and Xiaopan Lian,
Group vertex-arboricity of group-labelled graphs,
Discrete Math., accepted, 2026.
https://arxiv.org/abs/2305.01472
Zichao Dong gave a talk on the maximum size of a set family in which, for each i≤k, every intersection of i members has a prescribed parity at the Discrete Math Seminar http://www.youtube.com/watch?v=0T5pmKTH8Vs https://dimag.ibs.re.kr/202…
#New_arXiv_paper
*Sang-il Oum*,
A proof of the cycle double cover conjecture by OpenAI: An exposition, 2026.
https://arxiv.org/abs/2607.16356
#New_accepted_paper
Daniel Lokshtanov, Paweł Rzążewski, Saket Saurabh, *Roohani Sharma*, and Meirav Zehavi,
Maximum Partial List H-Coloring on
$P_5$-free graphs in polynomial time,
J. Graph Theory, accepted, 2026.
https://arxiv.org/abs/24…
Sang-il Oum (엄상일) gave a talk at the Discrete Math Seminar on a recent proof of the cycle double cover conjecture by OpenAI http://www.youtube.com/watch?v=TH7huW27BHA https://dimag.ibs.re.kr/2026/cdc/
Yaobin Chen gave a talk on the maximum size of a subset in general position of a random subset of a finite-dimensional vector space over a finite field http://www.youtube.com/watch?v=SCls0AFRwjo https://dimag.ibs.re.kr/2026/yaobin-chen-sem…
#New_accepted_conferrence_paper
Dario Cavallaro, *Maximilian Gorsky*, Stephan Kreutzer, Dimitrios M. Thilikos, and Sebastian Wiederrecht,
Optimal Bounds for the k-Disjoint Paths Problem,
In the Proceedings of the 67th Annual Symposium on …
2026 Workshop on Topological Combinatorics Successfully Held at GIST
The 2026 Workshop on Topological Combinatorics was successfully held at Gwangju Institute of Science and Technology (GIST) from June 28 to July 11, 2026....
https://dimag…
Welcome Yaobin Chen and Simón Piga, new members of IBS ECOPRO
The IBS Discrete Mathematics Group welcomes Dr. Yaobin Chen and Dr. Simón Piga, new research fellows at the IBS Extremal Combinatorics and Probability Group, starting July 1, 20…
Ting-Wei Chao gave a talk on a variation of the odd town problem at the Discrete Math Seminar http://www.youtube.com/watch?v=N576QJkJUyE https://dimag.ibs.re.kr/2026/ting-wei-chao-seminar-2/
OpenAI에서 이번에 해결한 50년 묵은 Cycle Double Cover 추측 증명을 오늘 읽어봤습니다. 학부 그래프이론 수업에서 강의하는 Jaeger의 nowhere-zero 8-flow 정리로 시작해서... 기발한 방식으로 각 edge에 두 개씩 값을 주는 방식을 잘 정의하더니 선형대…
🐘 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
Nov 2018
An OG fediverse account from Mastodon's early years — a long, established presence.
💡 Facts
🗓️Joined Mastodon in 2018 — 7 years ago.
👁️Averages 3 views per post.
📤Posts about 8× per week.
🛡️ Audience credibility
89/100
Excellent
Credibility score
99%
Real
Real audience
Low
Fake-follower risk
High
Data confidence
- Est. 99% real, active audience · Low fake-follower risk.
- Strong engagement (~1.9% of followers engage each post) — an active, real audience.
- Verified account.
- Established account (7+ years old).
Heuristic estimate from engagement, follower ratios, account age & growth — a screening signal, not a guarantee.
About
수학자/그래프 이론 전공/기초과학연구원 이산수학그룹 CI😎
Mathematician / Graph Theory / CI of the IBS Discrete Mathematics Group
🔀 Audience overlap
EstimatedEstimated shared audience with similar creators — useful for avoiding overlap (or doubling down) when planning a campaign.
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17%
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