fredrikj.net / blog ( RSS feed)

Fredrik Johansson's blog

2024-10-17: Further optimizing bigfloat matrix multiplication
2024-06-10: Complex floats and some big root-finding speedups
2024-05-19: Faster, vector-friendly bigfloats in FLINT
2024-04-18: Faster crypto-sized residue ring arithmetic in FLINT
2024-04-04: Bordeaux FLINT workshop report
2024-02-25: What's new in FLINT 3.1
2023-11-15: The reciprocal Fibonacci constant
2023-10-16: Kaiserslautern FLINT meeting report
2023-04-14: FLINT furnished with faster FFT
2022-07-19: Generics in FLINT
2022-06-29: Arb 2.23 released
2022-05-29: Multithreaded elementary functions
2022-05-19: Parallelizing Arb for fun and profit
2022-04-20: Things I would like to see in a computer algebra system
2022-04-05: Arb is 10
2022-02-28: Long-term development of some mathematical software projects
2022-02-18: Computing the Lerch transcendent
2022-01-20: A series complexity problem
2021-12-12: Computing special functions using numerical integration
2021-12-02: Optimizing erf in arbitrary precision
2021-11-23: Computing classical combinatorial numbers
2021-09-25: Floating-point wrappers in Arb
2021-06-22: Citing papers in software
2021-06-03: Bringing Calcium to Julia
2021-05-13: Calcium development update
2021-03-24: Printing algebraic numbers
2021-02-24: Computing with metavalues
2021-01-31: The symbolic formula language in Calcium and Fungrim
2021-01-28: Developing mathematical software in C
2021-01-25: Infinity in Calcium and Fungrim
2021-01-15: Flat-packed symbolic expressions
2020-11-10: Exact matrix functions in Calcium
2020-09-14: Benchmarking exact DFT computation
2020-09-08: Calcium 0.1
2020-01-31: Grim symbolic computation
2019-10-16: Arb 2.17 released
2019-09-25: Fungrim ♥ OEIS
2019-09-21: What is the most common real number?
2019-07-08: New logos: Fungrim, FLINT, mpmath
2019-05-31: A grimoire of functions
2018-12-02: Eigenvalues in Arb
2018-11-01: Announcing Python-FLINT 0.2
2018-09-18: Accelerated arithmetic in Arb 2.15
2018-07-31: High-precision linear algebra in Julia: BigFloat vs Arb
2018-07-22: Arb 2.14 released
2018-07-12: Interesting interference integrals
2018-07-03: The Arb matrix revolutions
2018-06-29: The Arb matrix reloaded
2018-04-06: New color functions
2018-02-28: Arb 2.13.0 released, and more on integration
2017-11-29: Arb 2.12 released
2017-11-23: New rigorous numerical integration in Arb
2017-10-02: mpmath 1.0, and a ten-year retrospective
2017-09-06: Faster exp, sin and cos at high precision
2017-07-10: Arb 2.11 is available
2017-02-27: Arb 2.10.0 released
2016-12-02: Arb 2.9.0 released
2016-11-17: Dirichlet L-functions in Arb
2016-10-25: The Riemann-Siegel formula in Arb
2016-08-26: Additional results
2016-03-16: Taking the error out of the error function
2016-03-12: Phaseful plots
2015-12-29: Arb 2.8.0 released
2015-11-20: Airy in the library
2015-10-19: The 2F1 bites the dust
2015-09-25: Finding Nemo
2015-08-06: Computing Bell numbers
2015-07-14: What's new in Arb 2.7.0
2015-07-11: Tio taktlösa trubadurer (tretton timmar till Tunis)
2015-01-28: Arb 2.5.0 released
2015-01-07: Arb and FLINT in Python
2014-12-07: Faster high-precision arctangents
2014-11-15: Arb 2.4.0
2014-11-09: Hypergeometric functions in Arb
2014-10-21: Theta functions and elliptic functions in Arb
2014-10-08: Modular forms in Arb
2014-10-03: Wrapping up FLINT's Summer of Code 2014
2014-09-25: Arb 2.3.0 with faster elementary functions
2014-08-12: Thirty times faster arctangents
2014-06-25: Easy hypergeometric series at unity
2014-06-20: Arb 2.1 released
2014-05-27: Arb 2.0 available
2014-05-11: Arb 2.0 preview: intervals at the speed of points
2014-05-03: Arb 1.1 released, 2.0 right around the corner
2014-04-17: Embettered polynomial multiplication
2014-03-02: New partition function record: p(10²⁰) computed
2014-02-28: Blog simplified
2013-12-22: FLINT 2.4 and Arb 1.0
2013-10-25: Tradeoffs in ball arithmetic
2013-10-03: Rigorous numerical integration
2013-09-26: Arb example programs, rigorous calculus
2013-08-24: Parallelism and scaling
2013-08-07: Arb 0.7: getting serious with power series
2013-08-04: More digits of zetazero(1)
2013-07-29: Computing 100,000 digits of zetazero(1)
2013-07-11: Numerical power series reversion
2013-04-02: Numerically stable fast polynomial arithmetic
2013-03-28: Testing Li’s criterion
2013-03-28: Arb 0.5
2013-03-26: Coping with a big argument
2013-03-21: Machin-like formulas for logarithms
2013-02-27: An even speedier gamma function
2013-02-26: Precise computation of roots of unity
2013-02-20: Timings for the complex gamma function in Arb
2013-01-26: Arb 0.4
2012-11-07: Arb 0.3, with complex numbers
2012-10-08: Automatic hypergeometric series
2012-09-29: Ball linear algebra
2012-09-24: Sometimes faster is worse
2012-09-19: Implementing log-gamma using the Stirling series
2012-09-17: Karatsuba’s algorithm for the gamma function
2012-09-06: Code rewrite, and Fibonacci numbers
2012-07-02: What’s new in FLINT 2.3
2012-05-16: Experiments with low-level ball arithmetic
2012-05-02: Logarithms as well
2012-04-30: Revisiting transcendental functions
2012-04-19: Algorithm selection for zeta(n)
2012-04-05: High-precision ball arithmetic
2012-03-31: Partitions into the quintillions
2012-03-19: Factorials mod n and Wilson’s theorem
2012-01-26: Blog moved
2011-06-08: Some FLINT 2.2 highlights
2011-03-14: 100 mpmath one-liners for pi
2011-03-11: A FLINT example: Lambert W function power series
2010-09-24: Announcing mpmath 0.16
2010-09-22: Again, mpmath in Sage is about to get faster
2010-09-05: Fast combinatorial and number-theoretic functions with FLINT 2
2010-07-28: Euler-Maclaurin summation of hypergeometric series
2010-07-27: Post Sage Days 24 report
2010-07-10: Sage Days 23, and Bessel function zeros
2010-07-02: Symbolic infinite series
2010-06-21: Incomplete elliptic integrals complete
2010-06-15: Assorted special functions update
2010-06-06: Announcing mpmath 0.15
2010-03-17: Hypergeneralization
2010-03-12: Computing large zeta zeros with mpmath
2010-03-11: Speedups of elementary functions
2010-02-12: Numerical multidimensional infinite series
2010-02-11: A new gamma function implementation
2010-02-05: Mpmath 0.14 released
2010-02-01: mpmath in Sage to become 3x faster
2010-01-27: Using Sage numbers in mpmath
2010-01-19: Zeta evaluation with the Riemann-Siegel expansion
2010-01-13: YAMDU (yet another mpmath development update)
2010-01-07: Accurate hypergeometric functions for large parameters
2009-12-22: Analytic continuation of 3F2, 4F3 and higher functions
2009-09-10: Python floats and other unusual things spotted in mpmath
2009-08-13: Released: mpmath 0.13
2009-08-11: Torture testing special functions
2009-08-09: 3D visualization of complex functions with matplotlib
2009-08-04: Coulomb wave functions and orthogonal polynomials
2009-07-14: Hurwitz zeta function, Dirichlet L-series, Appell F1
2009-07-12: Another Mathematica bug
2009-07-10: Improved incomplete gamma and exponential integrals; Clausen functions
2009-06-29: Meijer G, more hypergeometric functions, fractional differentiation
2009-06-19: Massive hypergeometric update
2009-06-11: Hypergeometric 2F1, incomplete beta, exponential integrals
2009-06-09: Mpmath 0.12 released
2009-06-06: Cython mpmath performance, part 2
2009-05-27: Cython mpmath performance
2009-05-22: Report from Sage Days 15
2009-03-04: Computing (generalized) Bell numbers
2009-02-21: How (not) to compute harmonic numbers
2009-02-19: Python 3.1 twice as fast as 3.0
2009-02-17: Approximate prime counting
2009-02-04: Galerkin’s method in SymPy
2009-02-04: Fun with zeta functions
2009-01-24: Mpmath 0.11 released
2009-01-15: Jacobi theta function fractals
2008-11-23: A spiralling little tune
2008-10-15: ANN: mpmath 0.10
2008-10-04: Mpmath’s first birthday
2008-09-25: Fun with the digamma function
2008-08-07: Wrapping it up
2008-07-27: Division: the sequel (with bonus material)
2008-07-08: Making division in Python faster
2008-07-07: Hypergeometric series with SymPy
2008-07-03: Faster pi, more integrals and complex numbers