MathOverflow
Profile Activity
Meta user
Network profile
53,423
reputation
7
154
335

Martin Brandenburg

I left academia and visit this forum only occasionally, so that I am not able to answer your questions in the comments, unfortunately.

You can contact me via email if you have questions or comments about my research. Please understand that I don't respond to emails with general mathematics questions and that it is a better idea to post them directly in the forum.

Email: [my last name] [at] uni [dash] [the city where I did my PhD].de

List of publications

328
answers
321
questions
~1.7m
people reached
  • Berlin, Germany
  • Member for 11 years, 3 months
  • 51,479 profile views
  • Last seen 12 hours ago

Communities (4)

Top network posts

Top tags (238)

Score 709
Posts 257
Posts % 40
Score 631
Posts 198
Score 543
Posts 108
Score 188
Posts 37
Score 125
Posts 70
Score 114
Posts 25
View all tags →

Top posts (649)

All Questions Answers
Votes Newest
257 Examples of common false beliefs in mathematics May 5 '10
96 A short proof for $\dim(R[T])=\dim(R)+1$ Jun 21 '14
89 $A$ is isomorphic to $A \oplus \mathbb{Z}^2$, but not to $A \oplus \mathbb{Z}$ Sep 12 '15
80 When is $A$ isomorphic to $A^3$? Dec 30 '09
73 $R$ is isomorphic to $R[X,Y]$, but not to $R[X]$ Dec 11 '15
69 Rigidity of the category of schemes Feb 28 '11
68 What are the reasons for considering rings without identity? Apr 26 '10
64 explicit big linearly independent sets May 1 '10
64 Example of an unnatural isomorphism Aug 14 '13
56 Counterexamples in Algebra? Jun 22 '10
View all questions and answers →

Badges (496)

Gold

7

Rarest

Silver

154

Rarest

Bronze

335

Rarest

View all badges →

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.