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Q&A Meta

Posts by The Amplitwist‭

15 posts
Score Age
89%
+15 −0
Q&A Why does the decimal expansion of $1/(10n - 1)$ have this neat pattern?

3 answers  ·  posted 4y ago by The Amplitwist‭  ·  last activity 4y ago by celtschk‭

Question number-theory high-school-mathematics
80%
+6 −0
Q&A What surface do I get by attaching $g$ handles as well as $k$ crosscaps to a sphere?

1 answer  ·  posted 4y ago by The Amplitwist‭  ·  last activity 4y ago by msh210‭

Question geometry topology compactness connectedness sphere
80%
+6 −0
Q&A Does every divergence-free vector field arise as the curl of some vector field?

1 answer  ·  posted 4y ago by The Amplitwist‭  ·  last activity 4y ago by Derek Elkins‭

Question geometry multivariable-calculus derivatives
75%
+4 −0
Q&A Product of empty set of elements vs. product over empty indexing set — is there any difference?

1 answer  ·  posted 4y ago by The Amplitwist‭  ·  edited 2y ago by Peter Taylor‭

Question product definition notation algebra
75%
+4 −0
Meta Marketing Math Codidact

posted 4y ago by The Amplitwist‭

Answer
75%
+4 −0
Q&A Given a triangle with squares on two sides, the line segments joining the centres of the squares to the midpoint of the third side are equal and perpendicular

1 answer  ·  posted 4y ago by The Amplitwist‭  ·  edited 4y ago by ArtOfCode‭

Question geometry complex-analysis
71%
+3 −0
Meta Post revisions are displayed without rendered Markdown but with rendered MathJax

0 answers  ·  posted 4y ago by The Amplitwist‭

Question feature-request MathJax-rendering post-history markdown
71%
+3 −0
Q&A What is an example of a pathological imbedding of a(n allowed) graph into an oriented surface?

1 answer  ·  posted 12mo ago by The Amplitwist‭  ·  last activity 9mo ago by The Amplitwist‭

Question topology graph-theory
71%
+3 −0
Q&A Is there a $\Delta$-complex structure on the sphere with less than three $0$-simplices?

1 answer  ·  posted 10mo ago by The Amplitwist‭  ·  last activity 10mo ago by Derek Elkins‭

Question algebraic-topology delta-complex
66%
+2 −0
Q&A If $n = xm$ and $n \rightarrow \infty$, then $m \rightarrow \infty$?

posted 4y ago by The Amplitwist‭  ·  edited 4y ago by The Amplitwist‭

Answer
66%
+2 −0
Q&A Why does the method of separating variables work?

2 answers  ·  posted 11mo ago by The Amplitwist‭  ·  last activity 8mo ago by Snoopy‭

Question partial-differential-equations separation-of-variables
60%
+1 −0
Q&A How do I unambiguously define the facial circuits in a $2$-cell embedding of a graph into a surface?

1 answer  ·  posted 10mo ago by The Amplitwist‭  ·  last activity 9mo ago by The Amplitwist‭

Question topology graph-theory
50%
+0 −0
Q&A How can I deduce which operation removes redundacies?

posted 4y ago by The Amplitwist‭

Answer
50%
+0 −0
Q&A What is an example of a pathological imbedding of a(n allowed) graph into an oriented surface?

posted 10mo ago by The Amplitwist‭  ·  edited 9mo ago by The Amplitwist‭

Answer
50%
+0 −0
Q&A How do I unambiguously define the facial circuits in a $2$-cell embedding of a graph into a surface?

posted 9mo ago by The Amplitwist‭

Answer