George Tsintsifas

mathematics & photography

Sunday, March 4. 2007

The Gate Posted by George Tsintsifas at 16:47

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The Gate

Friday, February 23. 2007

In Island (Aegean sea) Posted by George Tsintsifas at 06:45

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In Island (Aegean sea)

Friday, February 23. 2007

The problem (conjecture) of Larman-Zong Posted by George Tsintsifas at 06:21

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The problem (conjecture) of Larman-Zong

A solution for E³

Wednesday, February 14. 2007

Knossos Posted by George Tsintsifas at 17:41

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Knossos

Wednesday, February 14. 2007

Some Inequalities for a n-simplex Posted by George Tsintsifas at 17:30

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Some Inequalities for a n-simplex

Inequalities between the width, the sum of the sides and the circumradius of a n-simplex.

Monday, February 12. 2007

By the sea Posted by George Tsintsifas at 08:21

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By the sea

Monday, February 12. 2007

On Minkowski Geometry Posted by George Tsintsifas at 08:06

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On Minkowski Geometry

In this note we extend some well known properties of the Euclidean space Eⁿ to the Minkowski space Mⁿ.

Saturday, February 10. 2007

The desertion Posted by George Tsintsifas at 15:52

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The desertion

Saturday, February 10. 2007

The incircle of a tetrahedron Posted by George Tsintsifas at 15:10

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The incircle of a tetrahedron

The incircle of a tetrahedron is a circle of maximum radius inscribed in the tetrahedron for every direction in Eⁿ.

Saturday, February 10. 2007

Paris Posted by George Tsintsifas at 07:40

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Paris

Saturday, February 10. 2007

The Pantheon Rome Posted by George Tsintsifas at 07:38

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The Pantheon Rome

Saturday, February 10. 2007

Sterlitsies Posted by George Tsintsifas at 07:31

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Sterlitsies

Saturday, February 10. 2007

The old boat Posted by George Tsintsifas at 07:25

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The old boat

Monday, January 15. 2007

Inequalities Posted by George Tsintsifas at 06:18

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Inequalities

Some Geometric and Analytic Inequalities.

Tuesday, January 9. 2007

An inequality in the Cartesian plane. Posted by George Tsintsifas at 07:33

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An inequality in the Cartesian plane.

Let A(1,0), B(-1,0), C(0,1), D(0,-1) be points in the Cartesian plane and P so that OP is no less than 1. Then, it holds:

|AP-BP|+|CP-DP| is no less than 2.

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