Hiroshi Okumura

[39] viXra:2509.0105 submitted on 2025-09-17 16:40:03 , (306 unique-IP downloads)

An Essence of Division by Zero

Authors: Hiroshi Okumura
Category: General Mathematics

[38] viXra:2409.0045 submitted on 2024-09-09 20:48:02 , (183 unique-IP downloads)

An Example of Tan(π/2) = 0 from Seiyo Sampo

Authors: Saburou Saitoh, Hiroshi Okumura
Category: General Mathematics

[37] viXra:2408.0101 submitted on 2024-08-25 21:29:49 , (205 unique-IP downloads)

A Problem of Seiyo Sampo Revisited with 1/0=0

Authors: Hiroshi Okumura, Saburou Saitoh, Jun Ozone
Category: Geometry

[36] viXra:2112.0063 submitted on 2021-12-12 05:24:55, (247 unique-IP downloads)

Seven Archimedean Circles with Six-Fold Symmetry for the Arbelos

Authors: Hiroshi Okumura
Category: Geometry

[35] viXra:2109.0072 submitted on 2021-09-09 22:00:09, (283 unique-IP downloads)

Orthogonality of Two Lines and Division by Zero Calculus

Authors: Hiroshi Okumura, Saburou Saitoh
Category: Geometry

[34] viXra:2107.0064 submitted on 2021-07-11 23:31:06, (313 unique-IP downloads)

Semicircles in the Arbelos with Overhang and Division by Zero

Authors: Hiroshi Okumura
Category: Geometry

[33] viXra:2107.0053 submitted on 2021-07-08 01:32:16, (315 unique-IP downloads)

On the Elementary Function y=|x| and Division by Zero Calculus

Authors: Hiroshi Okumura, Saburou Saitoh, Keitarou Uchida
Category: Functions and Analysis

[32] viXra:2106.0174 submitted on 2021-06-29 23:18:35, (330 unique-IP downloads)

Enomoto's Problem in Wasan Geometry

Authors: Hiroshi Okumura
Category: Geometry

[31] viXra:2106.0173 submitted on 2021-06-30 00:10:47, (391 unique-IP downloads)

Geometry and Division by Zero Calculus

Authors: Hiroshi Okumura
Category: Geometry

[30] viXra:2106.0108 submitted on 2021-06-19 20:06:05, (484 unique-IP downloads)

Division by Zero Calculus in Figures - Our New Space Since Euclid -

Authors: Hiroshi Okumura, Saburou Saitoh
Category: Functions and Analysis

[29] viXra:2012.0067 replaced on 2020-12-11 08:34:18, (289 unique-IP downloads)

Remarks on the Circle Arising from Laurent Expansion

Authors: Hiroshi Okumura
Category: Geometry

[28] viXra:2011.0015 submitted on 2020-11-02 21:38:17, (327 unique-IP downloads)

Probability and Stochastic Analysis in Reproducing Kernels and Division by Zero Calculus

Authors: Tsutomu Matsuura, Hiroshi Okumura, Saburou Saitoh
Category: Statistics

[27] viXra:2011.0005 submitted on 2020-11-01 18:23:20, (277 unique-IP downloads)

Some New Type Laurent Expansions and Division by Zero Calculus; Spectral Theory

Authors: Hiroshi Okumura, Saburou Saitoh
Category: Functions and Analysis

[26] viXra:2010.0228 submitted on 2020-10-28 21:39:06, (570 unique-IP downloads)

Division by Zero Calculus and Euclidean Geometry - Revolution in Euclidean Geometry

Authors: Hiroshi Okumura, Saburou Saitoh
Category: Geometry

[25] viXra:2009.0052 submitted on 2020-09-07 10:04:06, (277 unique-IP downloads)

A Mystery Circle Arising from Laurent Expansion

Authors: Hiroshi Okumura
Category: Geometry

[24] viXra:2008.0188 submitted on 2020-08-25 10:41:05, (536 unique-IP downloads)

Haga's Theorems in Paper Folding and Related Theorems in Wasan Geometry Part 2

Authors: Hiroshi Okumura
Category: Geometry

[23] viXra:2006.0095 submitted on 2020-06-11 17:00:55, (267 unique-IP downloads)

Pappus Chain and Division by Zero Calculus

Authors: Hiroshi Okumura
Category: Geometry

[22] viXra:2003.0637 replaced on 2020-03-31 11:28:12, (357 unique-IP downloads)

On a Triangle with Two Parallel Sides

Authors: Hiroshi Okumura
Category: Geometry

[21] viXra:2003.0380 submitted on 2020-03-17 22:05:13, (181 unique-IP downloads)

A Pair of Congruent Circles in Tenzan Tebikigusa Furoku

Authors: Hiroshi Okumura
Category: Geometry

[20] viXra:2003.0276 replaced on 2020-03-14 14:03:09, (308 unique-IP downloads)

Excircles of a Triangle with Two Parallel Sides

Authors: Hiroshi Okumura
Category: Geometry

[19] viXra:2002.0501 replaced on 2020-02-25 10:13:01, (247 unique-IP downloads)

Note on Newton's Law of Universal Gravitation and Division by Zero

Authors: Hiroshi Okumura
Category: Mathematical Physics

[18] viXra:2001.0327 submitted on 2020-01-17 03:43:51, (251 unique-IP downloads)

Three Circle Chains Arising from Three Lines

Authors: Hiroshi Okumura
Category: Geometry

[17] viXra:2001.0173 submitted on 2020-01-09 19:57:17, (196 unique-IP downloads)

A Remark on an Archimedan Square of a Triangle Associated with an Arbelos

Authors: Hiroshi Okumura, Ercole Suppa
Category: Geometry

[16] viXra:2001.0158 replaced on 2020-01-09 16:40:08, (326 unique-IP downloads)

A Four Circle Problem and Division by Zero

Authors: Hiroshi Okumura
Category: Geometry

[15] viXra:2001.0123 replaced on 2020-05-21 20:54:08, (402 unique-IP downloads)

Pappus Chain and Division by Zero

Authors: Hiroshi Okumura
Category: Geometry

[14] viXra:2001.0034 submitted on 2020-01-03 01:08:58, (181 unique-IP downloads)

A Chain of Circles Touching a Circle and Its Tangent and Division by Zero

Authors: Hiroshi Okumura
Category: Geometry

[13] viXra:1908.0020 submitted on 2019-08-01 10:58:49, (265 unique-IP downloads)

A Note on Circle Chains Associated with the Incircle of a Triangle

Authors: Hiroshi Okumura
Category: Geometry

[12] viXra:1907.0581 replaced on 2019-08-26 11:18:55, (637 unique-IP downloads)

A Characterization of the Golden Arbelos Involving an Archimedean Circle

Authors: Hiroshi Okumura
Category: Geometry

[11] viXra:1907.0437 submitted on 2019-07-23 20:48:54, (561 unique-IP downloads)

Values of the Riemann Zeta Function by Means of Division by Zero Calculus

Authors: Hiroshi Okumura, Saburou Saitoh
Category: Number Theory

[10] viXra:1905.0407 submitted on 2019-05-22 03:20:09, (282 unique-IP downloads)

Division by Zero Calculus and Pompe's Theorem

Authors: Tsutomu Matsuura, Hiroshi Okumura, Saburou Saitoh
Category: General Mathematics

[9] viXra:1904.0123 submitted on 2019-04-06 21:12:45, (216 unique-IP downloads)

A Note on the Arbelos in Wasan Geometry, Satoh's Problem and a Circle Pattern

Authors: Hiroshi Okumura
Category: Geometry

[8] viXra:1902.0223 submitted on 2019-02-12 18:39:18, (695 unique-IP downloads)

Horn Torus Models for the Riemann Sphere and Division by Zero

Authors: Wolfgang W. D\"aumler, Hiroshi Okumura, Vyacheslav V. Puha, Saburou Saitoh
Category: Functions and Analysis

[7] viXra:1902.0221 submitted on 2019-02-12 23:41:31, (207 unique-IP downloads)

A Remark of the Definition of $0/0=0$ by Brahmagupta

Authors: Hiroshi Okumura
Category: General Mathematics

[6] viXra:1901.0162 submitted on 2019-01-11 17:27:46, (304 unique-IP downloads)

Archimedean Incircle of a Triangle

Authors: Hiroshi Okumura
Category: Geometry

[5] viXra:1811.0310 replaced on 2018-11-25 06:15:59, (485 unique-IP downloads)

A General Definition of Division in a Field

Authors: Hiroshi Okumura
Category: Algebra

[4] viXra:1811.0283 submitted on 2018-11-18 20:46:54, (404 unique-IP downloads)

To Divide by Zero is to Multiply by Zero

Authors: Hiroshi Okumura
Category: Algebra

[3] viXra:1811.0132 submitted on 2018-11-08 20:40:58, (232 unique-IP downloads)

The Arbelos in Wasan Geometry, Problems of Izumiya and Nait\=o

Authors: Hiroshi Okumura
Category: Geometry

[2] viXra:1804.0360 submitted on 2018-04-25 02:11:06, (216 unique-IP downloads)

A Note on a Problem in Misho Sampo

Authors: Hiroshi Okumura
Category: Geometry

[1] viXra:1802.0196 replaced on 2018-02-16 15:58:29, (352 unique-IP downloads)

A Note on a Problem Invoving a Square in a Curvilinear Triangle

Authors: Hiroshi Okumura
Category: Geometry