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Wrong series: (1/(x**4 + 1)).series(x, x0=sqrt(2)/2 - sqrt(2)*I/2, n=2) #1139

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skirpichev opened this issue Apr 3, 2021 · 0 comments · Fixed by #1147
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Wrong series: (1/(x**4 + 1)).series(x, x0=sqrt(2)/2 - sqrt(2)*I/2, n=2) #1139

skirpichev opened this issue Apr 3, 2021 · 0 comments · Fixed by #1147
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core series wrong answer if mathematically wrong result was obtained
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0.13

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@skirpichev
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skirpichev commented Apr 3, 2021 •
edited

Right now it's nan.

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@skirpichev skirpichev added wrong answer if mathematically wrong result was obtained core series labels Apr 3, 2021
@skirpichev skirpichev added this to the 1.0 milestone Apr 3, 2021
@skirpichev skirpichev modified the milestones: 1.0, 0.13 Jun 7, 2021
skirpichev added a commit to skirpichev/diofant that referenced this issue Jun 7, 2021
@skirpichev
Add regression test
02f6678 
Fix (partially) diofant#1139
skirpichev added a commit to skirpichev/diofant that referenced this issue Jun 8, 2021
@skirpichev
core: avoid deep expanding in Mul._eval_nseries()
21fd3aa 
This finally fix diofant#1139
Closes sympy/sympy#21176
@skirpichev skirpichev mentioned this issue Jun 8, 2021
Merged
skirpichev added a commit to skirpichev/diofant that referenced this issue Jun 10, 2021
@skirpichev
core: avoid deep expanding in Mul._eval_nseries()
d897be4 
This finally fix diofant#1139
Closes sympy/sympy#21176
skirpichev added a commit to skirpichev/diofant that referenced this issue Aug 15, 2021
@skirpichev
core: avoid deep expanding in Mul._eval_nseries()
3c45e95 
This finally fix diofant#1139
Closes sympy/sympy#21176
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core series wrong answer if mathematically wrong result was obtained
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0.13
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core: avoid deep expanding in Mul._eval_nseries() skirpichev/diofant
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@skirpichev