Results 111 to 120 of about 383 (157)

The dimension of product spaces. [PDF]

Proc Natl Acad Sci U S A, 1978
Wage ML.
europepmc   +1 more source

On the Mapping of Abstract Spaces on Polytopes. [PDF]

Proc Natl Acad Sci U S A, 1939
Lefschetz S.
europepmc   +1 more source

On Universal Homology Groups. [PDF]

Proc Natl Acad Sci U S A, 1935
Steenrod NE.
europepmc   +1 more source

Boolean Algebras and Their Application to Topology. [PDF]

Proc Natl Acad Sci U S A, 1934
Stone MH.
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A universal space for finite topological spaces

We find universal spaces for Alexandroff and finite spaces and explore some of its topological properties as well as their description as inverse limits of finite spaces and Alexandroff extensions.
Mondéjar, Diego
core  

The Fundamental Group of a Group Manifold. [PDF]

Proc Natl Acad Sci U S A, 1934
Smith PA.
europepmc   +1 more source

Some Properties of Real Linear Topological Spaces. [PDF]

Proc Natl Acad Sci U S A, 1941
Bourgin DG.
europepmc   +1 more source

An algebraic description of stereochemical correspondence. [PDF]

Proc Natl Acad Sci U S A, 1975
Nourse JG.
europepmc   +1 more source

On Locally Connected Sets and Retracts. [PDF]

Proc Natl Acad Sci U S A, 1938
Lefschetz S.
europepmc   +1 more source