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# Kenneth Johnson

### KJ Innovation

Last seen: 4 Monate vor Aktiv seit 2011

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Gesendet

Class DAA, "Derivative-Augmented Array"
Class DAA, "Derivative-Augmented Array", is a general-purpose automatic differentiation engine implemented in MATLAB.

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Calculate Padé coefficients corresponding to a truncated Taylor series.

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pageexpm
Paged matrix exponential function

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Generalized matrix operators
The functions mtimes_.m, mldivide_.m, and mrdivide_.m generalize the corresponding MATLAB functions.

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bsxi
Array indexing for binary singleton expansion

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Linear differential equation solver (lde.m)
solves a linear, first-order, vector differential equation

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permn
Generate permutations of 1:n and permutation parity.

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str2subs, subs2str
Convert a string to/from a subscript struct for use in subsref and subsasgn.

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roots_
roots_(c) does not return zero when c(end) is nonzero.

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fminsearch_(funfcn,x0,options,varargin)
Works around a bug (or design defect) in fminsearch.

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serpind.m
serpentine traversal of an N-dimensional array

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fgridmin.m
global minimization utility

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Generalized Matrix Exponential
Solves Y'(t) = D(t)*Y(t) for Y(1) with Y(0) = I (identity matrix).

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Scalar
The Scalar base class disallows non-scalar instantiation.

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Matrix exponential
Matrix exponential algorithm with improved numerical precision

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Matrix polynomial
Efficiently evaluate a polynomial with square-matrix argument and scalar coefficients.

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matrix power
more efficient than MATLAB's mpower function

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elementwise power
more efficient than MATLAB's power function

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Scanned-Spot-Array EUV Imaging for High-Volume Maskless Lithography
Design data and optical simulation code for maskless EUV lithography system

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Cornu Spline
two-point spline with slope constraints