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sage: minor improvements and document some stuff

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This commit is contained in:
narodnik
2022-07-30 20:33:59 +02:00
parent 1badb54ac1
commit 2c8643d653
2 changed files with 10 additions and 2 deletions
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6
script/research/ec/ordp.sage
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@@ -76,7 +76,11 @@ def ordp(P, original_f, debug=False):
g = g[0]
assert u(Px, Py) == 0
assert f(Px, Py) != 0
#assert g(Px, Py) != 0
assert g(Px, Py) != 0
if debug:
print(f"u = {u}")
print(f"f = {f}")
print(f"g = {g}")
return k

6
script/research/ec/valuate.sage
View File

@@ -125,7 +125,11 @@ g = g[0]
fprime = b0^k * f/g
assert fprime == S(original_f)
# to convert fprime back again:
#f, g = fprime.numerator().lift(), fprime.denominator().lift()
# f, g = fprime.numerator().lift(), fprime.denominator().lift()
# to get the parent ring use:
# f.parent()
# to move up the hierarchy
# S.ring().cover_ring()
assert g(Px, Py) != 0
assert f(Px, Py) != 0
assert b0(Px, Py) == 0