Takashi Matsubara

ID:1898
First Name:Takashi
Last Name:Matsubara
Last Change:2008-12-31
Number of Files:6 (252nd most prolific)
Number of Downloads:30,386 (348th most downloaded)

FACTMOD 1.10   (details) 49/50 ENG   3KB/2KB
FACTMOD factorizes a polynomial modulo the current modulus. The built-in command FACTORMOD cannot be executed for a polynomial with degree that can be divided by the current modulus. FACTMOD can be executed for such polynomials. Faster than previous versions.
By Takashi Matsubara. 2007/09/25

Galois Field 1.10   (details) 49/50 ENG   125KB/20-22KB
The Galois Field library is a collection of basic calculations of Galois field GF(q) with q equal to p^n where p is a prime number and n is a positive integer, that is, a finite field F_q. This library includes commands of multiplication and division on GF(q), factorization of a polynomial over GF(q), kernel of a matrix over GF(q), the minimal polynomial of an element of GF(q) over GF(p), and more. The latest versions of the libraries FACTMOD and KERMOD are contained. Includes PDF documentation.
By Takashi Matsubara. 2008/12/31

KERMOD 1.03   (details) 49/50 ENG   2KB/3KB
The library KERMOD includes four commands: KERMOD, IMAGEMOD, BASISMOD, IBASISMOD. These are modulo commands for the current modulus of the built-in commands KER, IMAGE, BASIS, IBASIS, respectively.
By Takashi Matsubara. 2005/09/03

LOGPLOT 2.05   (details) 49/50 ENG   56KB/9KB
ScreenshotThis library makes log-scale graphs for the 49G/49g+/50g. Plot types "Function", "Scatter" and "Parametric" are implemented. In the type "Function", TRACE and (X,Y) in the 49G plot menu are available. Non-uniform logarithmic tick, zoom-in, zoom-out and recenter are implemented. Faster than previous versions.
By Takashi Matsubara. 2007/08/04

LOGPLOT48 2.05   (details) 48 ENG   55KB/11KB
ScreenshotThis library makes log-scale graphs for the 48 series. Plot types "Function", "Scatter" and "Parametric" are implemented. In the type "Function", TRACE and (X,Y) in the 48G plot menu are available. Non-uniform logarithmic tick, zoom-in, zoom-out and recenter are implemented.
By Takashi Matsubara. 2007/08/04

POLYROOT and NTHROOT 1.01   (details) 49/50 ENG   41KB/4KB
POLYROOT finds roots of a polynomial with degree < 5. NTHROOT calculates the n-th root of a complex number with an integer n. In some cases, NTHROOT can be used instead of XROOT.
By Takashi Matsubara. 2006/05/14

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