add approximate derivative of gaussian windowed whittaker shannon interpolation for platt zeta zeros

flintlib / arb

Arb has been merged into FLINT -- use https://github.com/flintlib/flint/ instead

http://arblib.org/

GNU Lesser General Public License v2.1

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add approximate derivative of gaussian windowed whittaker shannon interpolation for platt zeta zeros #285

Closed p15-git-acc closed 5 years ago

p15-git-acc commented 5 years ago

This would be for platt zeta zeros refinement; when the root finder detects an f(x) interval containing zero, an approximate f'(x) can help guess eps so that f(x-eps) and f(x+eps) might have definite and opposite signs.