## What is Poincare Conjecture in simple terms?

Poincaré conjecture, in topology, conjecture—now proven to be a true theorem—that every simply connected, closed, three-dimensional manifold is topologically equivalent to S3, which is a generalization of the ordinary sphere to a higher dimension (in particular, the set of points in four-dimensional space that are …

## Is the Poincare Conjecture solved?

Russian mathematician Grigori “Grisha” Perelman was awarded the Prize on March 18 last year for solving one of the problems, the Poincaré conjecture – as yet the only one that’s been solved. Famously, he turned down the $1,000,000 Millennium Prize.

**What is Poincare Conjecture used for?**

The Poincare Conjecture is essentially the first conjecture ever made in topology; it asserts that a 3-dimensional manifold is the same as the 3-dimensional sphere precisely when a certain algebraic condition is satisfied. The conjecture was formulated by Poincare around the turn of the 20th century.

### How long did it take to solve the Poincare Conjecture?

seven years

And from 1995 to November 2002, he worked alone on the Poincaré’s Conjecture, cutting off nearly all contact with the mathematics community. In these seven years, Perelman was able to overcome the difficulties that crushed Hamilton’s hopes of finding the proof.

### How hard was the Poincare Conjecture?

Poincaré, almost a hundred years ago, knew that a two dimensional sphere is essentially characterized by this property of simple connectivity, and asked the corresponding question for the three dimensional sphere. This question turned out to be extraordinarily difficult.

**Is the Poincare Conjecture true?**

The Poincaré conjecture was essentially true in both dimension four and all higher dimensions for substantially different reasons. In dimension three, the conjecture had an uncertain reputation until the geometrization conjecture put it into a framework governing all 3-manifolds.

#### Who Solved Millennium Problems?

Grigori Perelman, a Russian mathematician, solved one of the world’s most complicated math problems several years ago. The Poincare Conjecture was the first of the seven Millennium Prize Problems to be solved.