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Posts by celtschk‭

47 posts
Activity Age Score
71%
+3 −0
Q&A What's wrong with evaluating $n(n-1) \dots (n-[k-3])(n-[k-2])\color{red}{(n-[k-1])}$ at $k = 1$?

posted 5y ago by celtschk‭

Answer
71%
+3 −0
Q&A Why rational to be indifferent between two urns, when urn A has 50-50 red and white balls, but you don't know urn B's ratio?

posted 5y ago by celtschk‭  ·  edited 5y ago by celtschk‭

Answer
71%
+3 −0
Q&A Why does “unless” mean “if not”?

posted 6y ago by celtschk‭

Answer
66%
+2 −0
Q&A Are there other topologies on $\mathbb R$ that make it a topological field?

posted 10mo ago by celtschk‭  ·  edited 10mo ago by celtschk‭

Answer
66%
+2 −0
Q&A What does it mean by saying that $C([0,1])$ is a subset of $L^\infty([0,1])$?

posted 2y ago by celtschk‭  ·  edited 2y ago by celtschk‭

Answer
66%
+2 −0
Q&A Unification and generalization of limit and colimit

1 answer  ·  posted 3y ago by celtschk‭  ·  last activity 3y ago by Derek Elkins‭

Question limits category-theory
66%
+2 −0
Q&A Criterion in terms of the bases for determining whether one topology is finer than another

posted 3y ago by celtschk‭  ·  edited 3y ago by celtschk‭

Answer
66%
+2 −0
Meta How to get rid of the tag ordinals?

1 answer  ·  posted 4y ago by celtschk‭  ·  last activity 4y ago by Monica Cellio‭

Question support
66%
+2 −0
Q&A Is there a way to encode a unique arrangement of vertices of a graph with a unique short word?

posted 4y ago by celtschk‭  ·  edited 4y ago by celtschk‭

Answer
66%
+2 −0
Q&A What is "continuous" in Math?

posted 5y ago by celtschk‭

Answer
66%
+2 −0
Q&A After $n - 2$ unchosen doors are opened, how does the probability of the $n - 2$ unchosen doors "shift" or "transfer" to the lone unchosen door?

posted 5y ago by celtschk‭

Answer
66%
+2 −0
Q&A In "if and only if" proofs, why's 1 direction easier to prove than the other?

posted 5y ago by celtschk‭

Answer
66%
+2 −0
Meta Inconsistency of answer count between main page and question page

0 answers  ·  posted 5y ago by celtschk‭

Question bug
60%
+1 −0
Q&A Proving $|{\bf R}^{\bf R}|=|2^{\bf R}|$ using the Schroeder-Bernstein Theorem

posted 3y ago by celtschk‭

Answer
60%
+1 −0
Q&A Is this formula for the minimal sum correct?

posted 4y ago by celtschk‭

Answer
60%
+1 −0
Meta MathJax doesn't render after editing comment

0 answers  ·  posted 5y ago by celtschk‭  ·  edited 5y ago by deleted user

Question bug MathJax-rendering comments
60%
+1 −0
Q&A How to determine area of square using Calculus in Cartesian coodinate?

posted 5y ago by celtschk‭  ·  edited 5y ago by celtschk‭

Answer
60%
+1 −0
Q&A differentiate under integral sign says something went wrong

posted 5y ago by celtschk‭  ·  edited 5y ago by celtschk‭

Answer
60%
+1 −0
Q&A Why should a non-commutative operation even be called "multiplication"?

posted 5y ago by celtschk‭

Answer
50%
+0 −0
Q&A Is Mathematical Induction truly "induction", or misnamed?

posted 4y ago by celtschk‭

Answer
50%
+0 −0
Meta Editing my answer fails

0 answers  ·  posted 5y ago by celtschk‭  ·  edited 5y ago by Monica Cellio‭

Question bug status-completed editing
50%
+0 −0
Q&A Why does the decimal expansion of $1/(10n - 1)$ have this neat pattern?

posted 6y ago by celtschk‭

Answer