Changes between Version 9 and Version 10 of Ticket #28916


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Timestamp:
01/04/20 23:20:57 (6 months ago)
Author:
gh-DeRhamSource
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  • Ticket #28916

    • Property Milestone changed from sage-9.0 to sage-9.1
  • Ticket #28916 – Description

    v9 v10  
    11This makes the coercion model of mixed forms more robust against modifications regarding differential forms. For instance: As soon as all differential forms of another mixed form have a coerce map, the mixed form has one too. The same now holds for any algebraic element which is coercible into a single differential form.
    22
    3 At this stage, the method `degree` is used and special cases are handled separately. But notice that not all coercible objects provide this method (symbold ring). Or conversely, having this method doesn't mean being coercible into a differential form. Hence this invocation is now entirely avoided.
     3At this stage, the method `degree` is used and special cases are handled separately. But notice that not all coercible objects provide this method (symbolic ring). Or conversely, having this method doesn't mean being coercible into a differential form. Hence this invocation is now entirely avoided.