# Geometry

## 1401 Submissions

[3] **viXra:1401.0219 [pdf]**
*replaced on 2014-10-06 10:49:45*

### A New Slant on Lebesgue’s Universal Covering Problem

**Authors:** Philip E Gibbs

**Comments:** 24 Pages.

Lebesgue’s universal covering problem is re-examined using computational methods. This leads to conjectures about the nature of the solution which if correct could provide a blueprint for a complete solution. Empirical lower bounds for the minimal area are computed using different hypotheses based on the conjectures. A new upper bound of 0.844112 for the area of the minimal cover is derived improving previous results. This method for determining the bound is suggested by the conjectures and computational observations but is proved independently of them. The key innovation is to modify previous best results by removing corners from a regular hexagon at a small slant angle to the edges of the dodecahedron used before. Simulations indicate that the minimum area for a convex universal cover is likely to be around 0.84408.

**Category:** Geometry

[2] **viXra:1401.0131 [pdf]**
*submitted on 2014-01-17 19:37:45*

### A Proof of the Kepler’s Conjecture

**Authors:** Zhang Tianshu

**Comments:** 16 Pages.

Heap together equivalent spheres into a cube up to most possible, then variant general volumes of equivalent spheres inside the cube depend on variant arrangements of equivalent spheres fundamentally. This π/√18 which the Kepler’s conjecture mentions is the ratio of the general volume of equivalent spheres under the maximum to the volume of the cube. We will do a closer arrangement of equivalent spheres inside a cube. Further let a general volume of equivalent spheres to getting greater and greater, up to tend upwards the super-limit, in pace with which each of equivalent spheres is getting smaller and smaller, and their amount is getting more and more. We will prove the Kepler’s conjecture by such a way in this article.

**Category:** Geometry

[1] **viXra:1401.0011 [pdf]**
*replaced on 2014-04-02 21:18:40*

### Equidistant Curve Coordinate System(inversions(7))

**Authors:** Morio Kikuchi

**Comments:** 12 Pages.

We generalize inversion mathematically(2).

**Category:** Geometry