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New posts in examples-counterexamples
non time constructible functions [duplicate]
functions
algorithms
computer-science
examples-counterexamples
analysis-of-algorithms
Is there a counterexample to this weakened converse of Hall's theorem?
group-theory
reference-request
finite-groups
examples-counterexamples
simple-groups
Is there a simple geometric example of unequal left and right cosets?
abstract-algebra
group-theory
soft-question
finite-groups
examples-counterexamples
The "true" domain of random variables
probability
probability-theory
random-variables
examples-counterexamples
mathematical-modeling
Proving the derived set $E'$ is closed.
general-topology
examples-counterexamples
Examples of a quotient map not closed and quotient space not Hausdorff
general-topology
examples-counterexamples
quotient-spaces
separation-axioms
The perception of mathematics
soft-question
examples-counterexamples
education
Is this kind of space metrizable?
general-topology
metric-spaces
examples-counterexamples
compactness
Integral extensions of rings, when one of the rings is a field
abstract-algebra
commutative-algebra
ring-theory
examples-counterexamples
If a sub-C*-algebra does not contain the unit, is it contained in a proper ideal?
ring-theory
examples-counterexamples
c-star-algebras
K topology: Examples
general-topology
examples-counterexamples
Examples of non-Euclidean domains which have a universal side divisor
abstract-algebra
ring-theory
algebraic-number-theory
examples-counterexamples
Examples of provably${}^n$ unprovable statements
logic
set-theory
examples-counterexamples
proof-theory
Some examples in C* algebras and Banach * algebras
functional-analysis
examples-counterexamples
operator-algebras
banach-algebras
von-neumann-algebras
Example of a set $Y$ that has zero Lebesgue measure and a continuous function $f$ such that $f(Y)$ is not a set of zero Lebesgue measure.
real-analysis
measure-theory
continuity
examples-counterexamples
Lifting a convergent net through a quotient map
general-topology
examples-counterexamples
quotient-spaces
nets
How does the method of Lagrange multipliers fail (in classical field theories with local constraints)?
functional-analysis
optimization
multivariable-calculus
examples-counterexamples
Are elements commutative when subgroups are?
group-theory
examples-counterexamples
Can the long line be embedded in euclidean space?
general-topology
manifolds
examples-counterexamples
The topology on $X/{\sim}\times X/{\sim}$ is not induced by $\pi\times\pi$.
general-topology
examples-counterexamples
quotient-spaces
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