general topology : Math Help

Borel measure determined uniquely on a base

real-analysis general-topology functional-analysis measure-theory geometric-measure-theory
Updated December 11, 2018 06:20 AM

A contradictory result from a corollary with the fact that the quotient space of a Hausdorff space is not necessary Hausdorff

general-topology
Updated December 11, 2018 06:20 AM

Let $U$ be the set of all $n×n$ matrices with real entries such that all their eigenvalues belong to $\mathbb C \setminus \mathbb R $.

general-topology eigenvalues-eigenvectors
Updated December 11, 2018 06:20 AM

Show that the closure of $A$ is the intersection of all closed sets containing $A$, topology proof needed

real-analysis general-topology proof-verification proof-writing proof-explanation
Updated December 11, 2018 04:20 AM

Computing $\int_{S^{1} \times S^{1}} d\theta_{1} \wedge d\theta_{2}$

differential-topology differential-forms
Updated December 11, 2018 02:20 AM

Prove that E=[0,1] is closed on $\mathbb{R}$.

real-analysis general-topology analysis
Updated December 11, 2018 00:20 AM

Proof that $b$ is point of closure of $[a,b)$

real-analysis general-topology
Updated December 10, 2018 17:20 PM

Confusion about quotient of the Lie group $\mathbb{S}^1$

differential-geometry differential-topology lie-groups
Updated December 10, 2018 16:20 PM

Graph of the composition of a continuous function and a correspondence with a graph homeomorphic to its domain

general-topology continuity set-valued-analysis
Updated December 10, 2018 15:20 PM

Proving projective space is a topological manifold

general-topology
Updated December 10, 2018 15:20 PM

Construction of random elements in Hilbert space which are almost surely orthogonal.

probability general-topology functional-analysis probability-theory hilbert-spaces
Updated December 10, 2018 14:20 PM

compactness and relative compactness

general-topology banach-spaces compactness normed-spaces
Updated December 10, 2018 12:20 PM

Rudin functional analysis, section 3.8 (Topological preliminaries)

functional-analysis topological-vector-spaces weak-topology
Updated December 10, 2018 11:20 AM

Does there exist a continuous 2-to-1 function from the sphere to itself?

general-topology algebraic-topology
Updated December 10, 2018 10:20 AM

Definition of Differential operator

differential-geometry differential-topology differential-operators
Updated December 10, 2018 09:20 AM

Sheaves of differentials under local diffeomorphisms

differential-geometry algebraic-geometry algebraic-topology differential-topology riemannian-geometry
Updated December 10, 2018 08:20 AM

Set of Matrices with a given characteristic polynomial is compact

linear-algebra general-topology matrices
Updated December 10, 2018 07:20 AM

Find the fundamental group of the following spaces

algebraic-topology
Updated December 10, 2018 04:20 AM

Whether the set $A$ is a compact subset of $M_3(\Bbb R)$.

general-topology
Updated December 10, 2018 03:20 AM

Any countable set has measurable zero

real-analysis general-topology elementary-set-theory
Updated December 10, 2018 02:20 AM

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