Communities

Writing
Writing
Codidact Meta
Codidact Meta
The Great Outdoors
The Great Outdoors
Photography & Video
Photography & Video
Scientific Speculation
Scientific Speculation
Cooking
Cooking
Electrical Engineering
Electrical Engineering
Judaism
Judaism
Languages & Linguistics
Languages & Linguistics
Software Development
Software Development
Mathematics
Mathematics
Christianity
Christianity
Code Golf
Code Golf
Music
Music
Physics
Physics
Linux Systems
Linux Systems
Power Users
Power Users
Tabletop RPGs
Tabletop RPGs
Community Proposals
Community Proposals
tag:snake search within a tag
answers:0 unanswered questions
user:xxxx search by author id
score:0.5 posts with 0.5+ score
"snake oil" exact phrase
votes:4 posts with 4+ votes
created:<1w created < 1 week ago
post_type:xxxx type of post
Search help
Notifications
Mark all as read See all your notifications »
Users Search
Help Dashboard Sign In Sign Up
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 10mo ago by The Amplitwist‭  ·  last activity 8mo 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 9mo ago by The Amplitwist‭  ·  last activity 9mo 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 10mo ago by The Amplitwist‭  ·  last activity 7mo 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 9mo ago by The Amplitwist‭  ·  last activity 8mo 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 9mo ago by The Amplitwist‭  ·  edited 8mo 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 8mo ago by The Amplitwist‭

Answer