bio | website | Mail:firstname.lastnameatgmai… |
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location | Regensburg, Germany | |
age | ||
visits | member for | 4 years, 6 months |
seen | 13 hours ago | |
stats | profile views | 3,578 |
Mar 31 |
reviewed | Edit suggested edit on Is there a purely group-theoretic reformulation of an equivalence of subgroups? |
Mar 31 |
revised |
Is there a purely group-theoretic reformulation of an equivalence of subgroups?
I've added a link to a video of a conference of M. Izumi on this subject. |
Mar 31 |
comment |
Given a 2-category, is the hammock localization wrt the equivalences equivalent to taking the hom-wise nerve of the maximal subgroupoids?
@Zhen Lin : This helped me. Thanks again! |
Mar 31 |
comment |
Given a 2-category, is the hammock localization wrt the equivalences equivalent to taking the hom-wise nerve of the maximal subgroupoids?
Thank you for this example! You are right that the hammock localization cannot distinguish different 2-isomorphisms. Now if the hom-categories are preorders, the answer could still be affirmative. Any thoughts on this? |
Mar 30 |
asked | Given a 2-category, is the hammock localization wrt the equivalences equivalent to taking the hom-wise nerve of the maximal subgroupoids? |
Mar 30 |
awarded | Electorate |
Mar 20 |
awarded | Custodian |
Mar 20 |
reviewed | Approve suggested edit on Order homomorphism functions on $\omega_1$ |
Mar 20 |
comment |
The most unexpected and/or the least natural category theory theorem?
But in order to get an interpretation of logic in an elementary topos you need to know that it has finite colimits, don't you? |
Mar 16 |
awarded | Nice Question |
Mar 16 |
comment |
Pseudonyms of famous mathematicians
According to that homepage Rhineghost was a group five people. Rhineghost wrote 58 reviews for math.sci.net - some of them about articles of his own members, see numbers 11 and 22 on the list of reviews |
Mar 16 |
comment |
Pseudonyms of famous mathematicians
Y.T. Rhineghost has a great homepage: csupomona.edu/~hlord/geist |
Mar 14 |
awarded | Populist |
Mar 13 |
comment |
Sheaffication using a $\lambda$-transfinite colimit
I would love to do this. Maybe it works out some time... |
Mar 12 |
answered | Sheaffication using a $\lambda$-transfinite colimit |
Feb 27 |
awarded | Custodian |
Jan 25 |
awarded | Popular Question |
Jan 23 |
awarded | Nice Answer |
Jan 12 |
awarded | Revival |
Jan 12 |
answered | What is about J. v. Neumann's “Continuous geometry”? |