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Examples-counterexamples
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Examples of continuous functions $f:(0,1)\to[0,1]$
October 15th, 2020
examples-counterexamples
functions
continuity
Can you explain us a simple example, for a mathematical function, of Kramersâ€“Kronig relations?
February 8th, 2020
complex-integration
examples-counterexamples
complex-analysis
cauchy-principal-value
analytic-functions
An example of a generalized Cantor set with positive Lebesgue measure
May 30th, 2020
real-analysis
examples-counterexamples
measure-theory
Weierstrass M-test proof?
August 1st, 2022
examples-counterexamples
functional-analysis
Prove by minimum counterexample that $2^n>10n$ for $n>5$
November 20th, 2020
induction
examples-counterexamples
proof-writing
If $A$, $B$, and $C$ are sets, the only way that $A\cup C = B \cup C$ is if $A=B$
August 1st, 2022
examples-counterexamples
elementary-set-theory
discrete-mathematics
How to convert a problem to a stars and bars problem?
August 29th, 2020
examples-counterexamples
probability
combinatorics
statistics
Derivative of complex-valued function and partial derivatives.
March 25th, 2020
complex-analysis
examples-counterexamples
Non-commuting projection operators on a Hilbert space
March 15th, 2020
examples-counterexamples
mathematical-physics
hilbert-spaces
functional-analysis
Separable metric space has a countable base
August 1st, 2022
examples-counterexamples
general-topology
metric-spaces
Example of a white noise series that is not a martingale difference series with respect to its natural filtration
October 6th, 2020
time-series
stochastic-processes
examples-counterexamples
Show that $f(x) = \log\log(\frac{e}{\Vert x \Vert_{2}})$ is in Sobolev space $W^{1,p}(B_1(0))$
December 31st, 2020
examples-counterexamples
sobolev-spaces
real-analysis
How can I provide a counterexample for this predicate logic problem?
August 1st, 2022
discrete-mathematics
examples-counterexamples
predicate-logic
Proving H is NOT a subgroup of G given G is NOT abelian
August 1st, 2022
abstract-algebra
examples-counterexamples
group-theory
Disprove the statement by giving a counterexample.
August 1st, 2022
discrete-mathematics
examples-counterexamples
Isomorphic Groups Example
August 1st, 2022
abstract-algebra
examples-counterexamples
counter-examples in measure theory and set topology
September 2nd, 2020
real-analysis
general-topology
examples-counterexamples
5 linear equations in 5 unknowns
August 1st, 2022
linear-algebra
examples-counterexamples
Example of eigenvectors in different bases (follow-up question)
June 25th, 2020
eigenvalues-eigenvectors
linear-algebra
examples-counterexamples
Functions without Laplace transform?
August 1st, 2022
examples-counterexamples
laplace-transform
Isometry of a metric space with proper subset
July 28th, 2020
examples-counterexamples
metric-spaces
What would be an example such that $aH=bH$ but $Ha \neq Hb$?
April 19th, 2020
abstract-algebra
examples-counterexamples
Propositional logic vs predicate logic: examples?
February 25th, 2020
predicate-logic
logic
examples-counterexamples
propositional-calculus
first-order-logic
Open and Closed Quotient Maps.
August 1st, 2022
quotient-spaces
general-topology
examples-counterexamples
how to solve a third degree equation of complex roots and coefficients
September 13th, 2020
complex-numbers
functional-equations
examples-counterexamples
Prove using the smallest counterexample technique that: $\binom {2n}n\leqslant4^n.$
November 8th, 2020
examples-counterexamples
Sequence in $l^p$ but not $l^q$ for all $q<p$
January 18th, 2020
functional-analysis
examples-counterexamples
lp-spaces
Does every inner product space have an orthonormal basis?
December 30th, 2020
linear-algebra
examples-counterexamples
Example of an unbounded sequence whose convergent subsequences converge to same limit
August 1st, 2022
examples-counterexamples
sequences-and-series
real-analysis
Closure of an open set
June 29th, 2020
general-topology
examples-counterexamples
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