George Tsintsifas

The projections of a convex body

nospam@example.com (George Tsintsifas) — Sun, 02 Nov 2008 22:29:36 +0000

The projections on the coordinate planes of a convex body. The Loomis-Whitney inequality.

Fishing in Thermaikos (Thessaloniki)

nospam@example.com (George Tsintsifas) — Thu, 03 Apr 2008 16:49:54 +0100

Tree in the sand

nospam@example.com (George Tsintsifas) — Wed, 26 Mar 2008 06:28:16 +0000

Generalization of Chebyshev Inequality (N.Dergiades G.Tsintsifas)

nospam@example.com (George Tsintsifas) — Fri, 21 Mar 2008 15:34:33 +0000

In our generalization we have found intermediate terms between the two

parts of the Chebyshev inequality

Aegean Sea. By C. Grammatopoulos

nospam@example.com (George Tsintsifas) — Fri, 21 Mar 2008 07:48:04 +0000

Greek Mythology. Aegeus, king of Athens and father of Theseus, falls into the sea after he saw Theseaus's boat. They had prearranged that if Theseus would die, the ship would come back wearing black sails. Theseus did not die but forgot to change the sails to white. So, Aegeus died in vain.

John's matrix. The vector relative to simplex

nospam@example.com (George Tsintsifas) — Fri, 21 Mar 2008 07:37:59 +0000

The idea relative to simplex seems to simplify some propositions and theorems

about to John's matrix.

By the sea board

nospam@example.com (George Tsintsifas) — Fri, 21 Mar 2008 07:05:46 +0000

An interesting theorem in Topology

nospam@example.com (George Tsintsifas) — Sun, 06 Jan 2008 11:27:56 +0000

We prove an interesting theorem in Topology similar to the Helly type theorem in Convexity.

Thessaloniki,sea-board 2

nospam@example.com (George Tsintsifas) — Sun, 06 Jan 2008 11:22:13 +0000

Thessaloniki, sea-board 1

nospam@example.com (George Tsintsifas) — Sun, 06 Jan 2008 11:15:13 +0000

Two conjectures for convex sets

nospam@example.com (George Tsintsifas) — Sun, 06 Jan 2008 07:41:04 +0000

R.J.Gardner, S.Kwapien and D.P.Laurie working on a conjecture of B.Grunbaum, reached two elegant conjectures including inequalities about ovals. Here is an interesting solution.

The olive tree

nospam@example.com (George Tsintsifas) — Sun, 06 Jan 2008 07:07:38 +0000

Some propositions on simplices

nospam@example.com (George Tsintsifas) — Sat, 09 Jun 2007 06:22:26 +0100

Theorems and inequalities on simplices

The perimeters of the cevian and pedal triangle

nospam@example.com (George Tsintsifas) — Fri, 08 Jun 2007 06:03:03 +0100

A solution to the problem E2716* of the A.M.M.

The Orthoptic Curve of a convex figure

nospam@example.com (George Tsintsifas) — Sun, 04 Mar 2007 16:51:04 +0000

The orthoptic curve K_* of the convex curve K is circle. What about K?. Some Inequalities.