35 relations: Barry Mazur, Cobordism, Dennis Barden, Differentiable manifold, Differential topology, Fields Medal, Generalized Poincaré conjecture, Geometric topology, Grigori Perelman, Groupoid, Handle decomposition, Hassler Whitney, Henri Poincaré, Homotopy, John Milnor, John R. Stallings, Manifold, Michael Freedman, Millennium Prize Problems, Piecewise linear manifold, Poincaré conjecture, Princeton University Press, Principal homogeneous space, Ricci flow, Richard S. Hamilton, Semi-s-cobordism, Simon Donaldson, Simple-homotopy equivalence, Simply connected space, Smooth structure, Springer Science+Business Media, Stephen Smale, Topological manifold, Whitehead torsion, Whitney embedding theorem.

## Barry Mazur

Barry Charles Mazur (born December 19, 1937) is an American mathematician and a Gerhard Gade University Professor at Harvard University.

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## Cobordism

In mathematics, cobordism is a fundamental equivalence relation on the class of compact manifolds of the same dimension, set up using the concept of the boundary (French bord, giving cobordism) of a manifold.

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## Dennis Barden

Dennis Barden is a mathematician at the University of Cambridge working in the fields of geometry and topology.

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## Differentiable manifold

In mathematics, a differentiable manifold (also differential manifold) is a type of manifold that is locally similar enough to a linear space to allow one to do calculus.

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## Differential topology

In mathematics, differential topology is the field dealing with differentiable functions on differentiable manifolds.

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## Fields Medal

The Fields Medal is a prize awarded to two, three, or four mathematicians under 40 years of age at the International Congress of the International Mathematical Union (IMU), a meeting that takes place every four years.

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## Generalized Poincaré conjecture

In the mathematical area of topology, the Generalized Poincaré conjecture is a statement that a manifold which is a homotopy sphere 'is' a sphere.

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## Geometric topology

In mathematics, geometric topology is the study of manifolds and maps between them, particularly embeddings of one manifold into another.

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## Grigori Perelman

Grigori Yakovlevich Perelman (a; born 13 June 1966) is a Russian mathematician.

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## Groupoid

In mathematics, especially in category theory and homotopy theory, a groupoid (less often Brandt groupoid or virtual group) generalises the notion of group in several equivalent ways.

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## Handle decomposition

In mathematics, a handle decomposition of an m-manifold M is a union where each M_i is obtained from M_ by the attaching of i-handles.

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## Hassler Whitney

Hassler Whitney (March 23, 1907 – May 10, 1989) was an American mathematician.

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## Henri Poincaré

Jules Henri Poincaré (29 April 1854 – 17 July 1912) was a French mathematician, theoretical physicist, engineer, and philosopher of science.

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## Homotopy

In topology, two continuous functions from one topological space to another are called homotopic (from Greek ὁμός homós "same, similar" and τόπος tópos "place") if one can be "continuously deformed" into the other, such a deformation being called a homotopy between the two functions.

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## John Milnor

John Willard Milnor (born February 20, 1931) is an American mathematician known for his work in differential topology, K-theory and dynamical systems.

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## John R. Stallings

John Robert Stallings Jr. (July 22, 1935 – November 24, 2008) was a mathematician known for his seminal contributions to geometric group theory and 3-manifold topology.

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## Manifold

In mathematics, a manifold is a topological space that locally resembles Euclidean space near each point.

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## Michael Freedman

Michael Hartley Freedman (born 21 April 1951) is an American mathematician, at Microsoft Station Q, a research group at the University of California, Santa Barbara.

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## Millennium Prize Problems

The Millennium Prize Problems are seven problems in mathematics that were stated by the Clay Mathematics Institute in 2000.

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## Piecewise linear manifold

In mathematics, a piecewise linear (PL) manifold is a topological manifold together with a piecewise linear structure on it.

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## Poincaré conjecture

In mathematics, the Poincaré conjecture is a theorem about the characterization of the 3-sphere, which is the hypersphere that bounds the unit ball in four-dimensional space.

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## Princeton University Press

Princeton University Press is an independent publisher with close connections to Princeton University.

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## Principal homogeneous space

In mathematics, a principal homogeneous space, or torsor, for a group G is a homogeneous space X for G in which the stabilizer subgroup of every point is trivial.

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## Ricci flow

In differential geometry, the Ricci flow (Italian) is an intrinsic geometric flow.

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## Richard S. Hamilton

Richard Streit Hamilton (born 1943) is Davies Professor of Mathematics at Columbia University.

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## Semi-s-cobordism

In mathematics, a cobordism (W, M, M&minus) of an (n + 1)-dimensionsal manifold (with boundary) W between its boundary components, two n-manifolds M and M−, is called a semi-s-cobordism if (and only if) the inclusion M \hookrightarrow W is a simple homotopy equivalence (as in an ''s''-cobordism) but the inclusion M^- \hookrightarrow W is not a homotopy equivalence at all.

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## Simon Donaldson

Sir Simon Kirwan Donaldson FRS (born 20 August 1957), is an English mathematician known for his work on the topology of smooth (differentiable) four-dimensional manifolds and Donaldson–Thomas theory.

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## Simple-homotopy equivalence

In mathematics, particularly the area of topology, a simple-homotopy equivalence is a refinement of the concept of homotopy equivalence.

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## Simply connected space

In topology, a topological space is called simply connected (or 1-connected, or 1-simply connected) if it is path-connected and every path between two points can be continuously transformed (intuitively for embedded spaces, staying within the space) into any other such path while preserving the two endpoints in question.

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## Smooth structure

In mathematics, a smooth structure on a manifold allows for an unambiguous notion of smooth function.

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## Springer Science+Business Media

Springer Science+Business Media or Springer, part of Springer Nature since 2015, is a global publishing company that publishes books, e-books and peer-reviewed journals in science, humanities, technical and medical (STM) publishing.

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## Stephen Smale

Stephen Smale (born July 15, 1930) is an American mathematician from Flint, Michigan.

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## Topological manifold

In topology, a branch of mathematics, a topological manifold is a topological space (which may also be a separated space) which locally resembles real n-dimensional space in a sense defined below.

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## Whitehead torsion

In geometric topology, a field within mathematics, the obstruction to a homotopy equivalence f\colon X \to Y of finite CW-complexes being a simple homotopy equivalence is its Whitehead torsion \tau(f) which is an element in the Whitehead group \operatorname(\pi_1(Y)).

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## Whitney embedding theorem

In mathematics, particularly in differential topology, there are two Whitney embedding theorems, named after Hassler Whitney.

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## Redirects here:

Cobordism theorem, H cobordism, H-Cobordism, H-Cobordism theorem, H-cobordism theorem, S-Cobordism theorem, S-cobordism, S-cobordism theorem, Smale h-cobordism theorem, Smale's h-cobordism theorem, Smale's theorem.

## References

[1] https://en.wikipedia.org/wiki/H-cobordism