similar to: elliptic functions

Displaying 20 results from an estimated 1100 matches similar to: "elliptic functions"

2005 Jul 15
0
new package: elliptic
Hi I recently uploaded package "elliptic" to CRAN. From the DESCRIPTION file, it is: A suite of elliptic and related functions including Weierstrass and Jacobi forms. Also includes various tools for manipulating and visualizing complex functions. enjoy rksh -- Robin Hankin Uncertainty Analyst National Oceanography Centre,
2005 Jul 15
0
new package: elliptic
Hi I recently uploaded package "elliptic" to CRAN. From the DESCRIPTION file, it is: A suite of elliptic and related functions including Weierstrass and Jacobi forms. Also includes various tools for manipulating and visualizing complex functions. enjoy rksh -- Robin Hankin Uncertainty Analyst National Oceanography Centre,
2009 Jul 15
0
time series fiting and residual computing
Dear 'R' Users, I have CO2 timeseries which I want to fit with fourth harmonic function and then would like to compute residuals. I tried with two option but not sure which one is correct, kindly any one can help correcting me: # #I would like to fit a model with Fourth harmonic function as:
2004 Nov 19
0
new package gsl, a wrapper for the Gnu Scientific Library
Dear list R package "gsl" is now on CRAN. This is a wrapper for the special functions of the Gnu Scientific Library (GSL). Functions include elliptic integrals, Airy functions, hypergeometric functions, and so on. Most functions optionally return error estimates. This library is a little odd in that documentation is limited to a pointer to the GSL reference manual, and occasional
2004 Nov 19
0
new package gsl, a wrapper for the Gnu Scientific Library
Dear list R package "gsl" is now on CRAN. This is a wrapper for the special functions of the Gnu Scientific Library (GSL). Functions include elliptic integrals, Airy functions, hypergeometric functions, and so on. Most functions optionally return error estimates. This library is a little odd in that documentation is limited to a pointer to the GSL reference manual, and occasional
2005 May 06
2
FAQ 7.31
Jacobi's theta functions crop up here and there in various branches of mathematics, such as unimodular and elliptic functions. They have Taylor expansions, but the powers increase as the square of n, as in 1 + z + z^4 + z^9 + z^16 + z^25 + . . . so they converge very quickly, provided |z|<1 The following toy function shows how I'm implementing these objects. I just add terms
2011 Oct 02
0
Arimax First-Order Transfer Function
Dear list members, I am a (very) recent convert to R and I am hoping you can help me with a problem I'm having. I'm trying to fit a first-order transfer function to an ARIMA intervention analysis using the "arimax" function. The data was obtained from McCleary & Hay (1980) (via Rob Hyndman's Time Series Library: http://robjhyndman.com/tsdldata/data/schizo.dat). It has
2004 Mar 19
3
Incomplete Gamma Functions and GammaDistribution Doc errata.
Hello all, In the course of trying to implement the CDF of an InverseGammaDistribution, I have run across the need for an igamma() function. Several others have needed this function but the answers I have found so far are not totally clear to me. I'm writing for three reasons: 1) to present a small error in the docs 2) to clarify the approach we are expected to take 3) to request,for the
2016 Aug 22
2
specifying elliptic curve
Hi, I've noticed that Dovecot is using per default the elliptic curve sect571r1. Because not all clients might support sect571r1, I would like to set the elliptic curve manually. Is that possible? -Ihsan -- ihsan at dogan.ch http://blog.dogan.ch/
2014 Apr 07
1
Source code patch (for 6.6p1) adding support for Brainpool Elliptic Curves
Dear all, ? maybe it is a little early but the next (stable) version of OpenSSL will support Brainpool Ellptic curves (current beta 1.0.2-beta1 contains support for Brainpool already). Brainpool curves are defined in RFC 5639. ? Please find attached a patch file that adds support for Brainpool Elliptic Curves in OpenSSH. Currently, setting the bit size to 256, 384 or 521 selects one of the
2013 Sep 14
4
Elliptic curves in tinc
In the past 24 hours multiple persons have contacted me regarding the use of elliptic curve cryptography in tinc 1.1 in light of the suspicion that the NSA might have weakened algorithms and/or elliptic curves published by NIST. The new protocol in tinc 1.1 (SPTPS) uses ECDH and ECDSA to do session key exchange and authentication, in such a way that it has the perfect forward secrecy (PFS)
2013 Sep 14
4
Elliptic curves in tinc
In the past 24 hours multiple persons have contacted me regarding the use of elliptic curve cryptography in tinc 1.1 in light of the suspicion that the NSA might have weakened algorithms and/or elliptic curves published by NIST. The new protocol in tinc 1.1 (SPTPS) uses ECDH and ECDSA to do session key exchange and authentication, in such a way that it has the perfect forward secrecy (PFS)
1999 Apr 10
2
IRIX compile (PR#163)
Full_Name: Tim Middelkoop Version: 0.64.0 OS: IRIX 6.3 on O2 Submission from: (NULL) (128.119.88.192) Various IRIX complile issues src/nmath/pnt.c IRIX cc does not like double negatives Makeconf,config.site,etc/Makeconf f77 pic hack, should change Makeconf.in or other... change -PIC with -KPIC enjoy, tim... === diff -ru orig/R-0.64.0/src/nmath/pnt.c R-0.64.0/src/nmath/pnt.c ---
2007 Oct 11
1
[Fwd: Re: pt inaccurate when x is close to 0 (PR#9945)]
Here's a contribution from Ian Smith that got bounced from the list. -------- Original Message -------- Subject: Re: [Rd] pt inaccurate when x is close to 0 (PR#9945) Date: Thu, 11 Oct 2007 06:02:43 -0400 From: iandjmsmith at aol.com To: murdoch at stats.uwo.ca Duncan, I tried sending the rest of this to R-devel but it was rejected as spam, hence the personal e-mail. R calculates the pt
2009 Nov 20
1
Bessel function with large index value
I am looking for a method of dealing with the modified Bessel function K_\nu(x) for large \nu. The besselK function implementation of this allows for dealing with large values of x by allowing for exponential scaling, but there is no facility for dealing with large \nu. What would work for me would be an lbesselK function in the manner of lgamma which returned the log of K_\nu(x) for large
1999 Mar 10
0
[R] bug? and New bug. --- patch for pt() only (PR#138)
The following patch saves pt(), but not the pf() and pbeta() ones which are harder.. [pbeta(), the incomplete beta ratio is really underlying all these... needs another asymptotic formula, and it's even harder to decide WHEN to switch from the (Taylor kind) series to the asymptotic formula ] This has to wait for a while, unless someone else.... BTW, S-plus also fouls up completely
2005 Aug 09
0
qpois minor bug (PR#8058)
Full_Name: Mikael Weigelt Version: 2.0 OS: windows Submission from: (NULL) (207.171.180.101) The calculation of the qpois attempts to use the Cornish-Fisher expansion as a starting approximation. The definition of the expansion is incorrect. However, since this approximation just gives an initial solution, the end result of the function is still correct. To fix the approximation, in the
2000 Feb 04
2
constrained optimiser doesn't obey constraints (PR#411)
---------- Forwarded message ---------- Date: Fri, 4 Feb 2000 01:58:44 +0000 (GMT) From: Thomas Lumley <thomas@biostat.washington.edu> To: r-bugs@biostat.ku.dk Subject: constrained optimiser doesn't obey constraints The constrained optimiser is calling the function with parameter values outside the constrained range In this example the box is from c(0,0,0,0) to c(1,1,.5,1). The
2014 Jan 02
3
Elliptic curve on Centos 6.x
Hi, Is there nice way to put back EC encryption on Centos? RHEL disabled it due "patent issues", but is third party providing packages to EC enabled packages to centos ? -- Eero
2010 Jun 09
0
Testing for differences in amplitude and phase
Dear R-helpers, I have time series data from 16 subjects and 2 treatment groups. The seasonal variation can be best described by two harmonics, I called the frequencies omega and omega2. I now want to test whether (1) the seasonal pattern differs between the treatments (some kind of overall test). If this is the case, (2) I want to conduct tests to find out whether the amplitude of the