Changes between Initial Version and Version 1 of Ticket #17190


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Timestamp:
10/21/14 16:07:28 (7 years ago)
Author:
defeo
Comment:

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  • Ticket #17190 – Description

    initial v1  
    11Conversion of univariate polynomials from the bivariate ring `RR['x,y']` fails:
    22
    3 ```
    4 sage: RR['x'](RR['x,y'].0)
    5 ---------------------------------------------------------------------------
     3{{{
     4sage: RR[wiki:'x' x](RR[wiki:'x,y' x,y].0)~~
     5
     6----
    67ValueError                                Traceback (most recent call last)
    78...
    89ValueError: max() arg is an empty sequence
    9 ```
     10}}}
    1011
    1112This does not seem to affect other rings:
    1213
    13 ```
    14 sage: QQ['x'](QQ['x,y'].0)
     14{{{
     15sage: QQ[wiki:'x' x](QQ[wiki:'x,y' x,y].0)
    1516x
    16 sage: CC['x'](CC['x,y'].0)
     17sage: CC[wiki:'x' x](CC[wiki:'x,y' x,y].0)
    1718x
    18 sage: RDF['x'](RDF['x,y'].0)
     19sage: RDF[wiki:'x' x](RDF[wiki:'x,y' x,y].0)
    1920x
    20 ```
     21}}}