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 Snoopy‭

42 posts
Score Age
77%
+5 −0
Q&A Proving that $p\mid (p+1776)$ if $p$ is a prime and $p(p+1776)$ is a perfect square

posted 2y ago by Snoopy‭  ·  edited 2y ago by Snoopy‭

Answer
77%
+5 −0
Q&A Why can't we conclude the extrema property of a function from its quadratic approximation when the discriminant is zero?

1 answer  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by Snoopy‭

Question multivariable-calculus derivatives
75%
+4 −0
Q&A If $\mathbf{R}$ is thought of as a vector space over $\mathbf{Q}$, what is its dimension?

1 answer  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by r~~‭

Question linear-algebra vector-space
75%
+4 −0
Q&A Proving that $p\mid (p+1776)$ if $p$ is a prime and $p(p+1776)$ is a perfect square

2 answers  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by Snoopy‭

Question number-theory algebra
75%
+4 −0
Q&A How can 3/1 ≡ 1/(1/3), when left side features merely integers, but right side features a repetend?

posted 2y ago by Snoopy‭  ·  edited 2y ago by Snoopy‭

Answer
71%
+3 −0
Q&A Using convexity in the proof of Hölder’s inequality

posted 10mo ago by Snoopy‭  ·  edited 8mo ago by Snoopy‭

Answer
71%
+3 −0
Q&A Does the series $\sum_{n=1}^{\infty} \frac{n^n}{n!} e^{-n}$ converge?

posted 3mo ago by Snoopy‭  ·  edited 3mo ago by Snoopy‭

Answer
71%
+3 −0
Q&A Find the value of $\sum_{k=1}^\infty\frac{k^2}{k!}$

3 answers  ·  posted 4mo ago by Snoopy‭  ·  last activity 4mo ago by Derek Elkins‭

Question complex-analysis real-analysis series
71%
+3 −0
Q&A Fourier transform of an $L^1$ function is uniformly continuous

posted 10mo ago by Snoopy‭  ·  edited 10mo ago by Snoopy‭

Answer
71%
+3 −0
Q&A For any real number $m$, $ \left|\sum_{n=1}^{\infty}\frac{m}{n^2+m^2}\right|<\frac{\pi}{2} $

posted 10mo ago by Snoopy‭  ·  edited 10mo ago by Snoopy‭

Answer
71%
+3 −0
Q&A The gcd of powers in a gcd domain

0 answers  ·  posted 2y ago by Snoopy‭  ·  edited 2y ago by Snoopy‭

Question abstract-algebra
71%
+3 −0
Q&A Using convexity in the proof of Hölder’s inequality

1 answer  ·  posted 10mo ago by Snoopy‭  ·  last activity 8mo ago by Snoopy‭

Question real-analysis
71%
+3 −0
Q&A If both $\lim_{x\to\infty}f(x)$ and $\lim_{x\to\infty}f'(x)$ exist, then $\lim_{x\to\infty}f'(x)=0$.

1 answer  ·  posted 10mo ago by Snoopy‭  ·  last activity 10mo ago by Snoopy‭

Question real-analysis
71%
+3 −0
Q&A $\liminf (a_n+b_n) = \liminf(a_n)+\liminf(b_n)$ provided that $\lim a_n$ exists

1 answer  ·  posted 11mo ago by Snoopy‭  ·  last activity 4mo ago by Snoopy‭

Question real-analysis limits
71%
+3 −0
Q&A Criterion in terms of the bases for determining whether one topology is finer than another

1 answer  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by celtschk‭

Question topology
71%
+3 −0
Q&A Finding the limit $ \lim_{x\to 0^+}e^{1/x}\sum_{n=\lfloor 1/x\rfloor}^\infty\frac{x^n}{n} $

1 answer  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by r~~‭

Question real-analysis limits
71%
+3 −0
Q&A Given two angles of a triangle, finding an angle formed by a median

1 answer  ·  posted 2y ago by Snoopy‭  ·  last activity 2y ago by Tim Pederick‭

Question euclidean-geometry vector
66%
+2 −0
Q&A For any real number $m$, $ \left|\sum_{n=1}^{\infty}\frac{m}{n^2+m^2}\right|<\frac{\pi}{2} $

1 answer  ·  posted 10mo ago by Snoopy‭  ·  last activity 10mo ago by Snoopy‭

Question calculus real-analysis
66%
+2 −0
Q&A Fourier transform of an $L^1$ function is uniformly continuous

1 answer  ·  posted 10mo ago by Snoopy‭  ·  edited 10mo ago by Snoopy‭

Question real-analysis fourier-analysis
66%
+2 −0
Q&A Why does the method of separating variables work?

posted 5mo ago by Snoopy‭

Answer
66%
+2 −0
Q&A Find the value of $\sum_{k=1}^\infty\frac{k^2}{k!}$

posted 4mo ago by Snoopy‭

Answer
66%
+2 −0
Q&A Find the value of $\sum_{k=1}^\infty\frac{k^2}{k!}$

posted 4mo ago by Snoopy‭  ·  edited 4mo ago by Snoopy‭

Answer
66%
+2 −0
Q&A Does the series $\sum_{n=1}^{\infty} \frac{n^n}{n!} e^{-n}$ converge?

2 answers  ·  posted 3mo ago by Snoopy‭  ·  last activity 3mo ago by Snoopy‭

Question calculus real-analysis series
66%
+2 −0
Q&A Does the series $\sum_{n=1}^{\infty} \frac{n^n}{n!} e^{-n}$ converge?

posted 3mo ago by Snoopy‭  ·  edited 3mo ago by Snoopy‭

Answer
66%
+2 −0
Q&A Holomorphic function on a connected bounded open subset of the complex plane

1 answer  ·  posted 3mo ago by Snoopy‭  ·  last activity 3mo ago by Snoopy‭

Question complex-analysis