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Alexander Gelbukh's user avatar
Alexander Gelbukh's user avatar
Alexander Gelbukh's user avatar
Alexander Gelbukh
  • Member for 10 years, 1 month
  • Last seen more than 4 years ago
Profile Activity

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asked
Immersion of non-orientable surface in $\mathbb R^3$ with conditions on the height function
comment
Reverse Toponogov triangle comparison
Could you please give a reference where I can find the local and global versions for upper comparison, or give actual proof?
accepted
Example similar to the Griffiths twin cone but with fundamental group that allows surjection onto $\mathbb Z$
revised
Example similar to the Griffiths twin cone but with fundamental group that allows surjection onto $\mathbb Z$
deleted 202 characters in body
asked
Example similar to the Griffiths twin cone but with fundamental group that allows surjection onto $\mathbb Z$
awarded
 Scholar
accepted
Can all contours of a function on a disk be made arbitrarily small?
awarded
 Commentator
revised
Can all contours of a function on a disk be made arbitrarily small?
added 5 characters in body
revised
Can all contours of a function on a disk be made arbitrarily small?
added 30 characters in body
revised
Can all contours of a function on a disk be made arbitrarily small?
added 4 characters in body
revised
Can all contours of a function on a disk be made arbitrarily small?
added 4 characters in body
revised
Can all contours of a function on a disk be made arbitrarily small?
added 4 characters in body
revised
Can all contours of a function on a disk be made arbitrarily small?
added 11 characters in body
comment
Can all contours of a function on a disk be made arbitrarily small?
@NateEldredge Right, will edit the question.
asked
Can all contours of a function on a disk be made arbitrarily small?
revised
First Betti number of a Reeb graph is not greater than that of the space?
added 75 characters in body
revised
First Betti number of a Reeb graph is not greater than that of the space?
added 68 characters in body
awarded
 Student
asked
First Betti number of a Reeb graph is not greater than that of the space?