#17261: Coercions from the modular group to the Theta subgroup
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Reporter: jj | Owner:
Type: enhancement | Status: new
Priority: minor | Milestone: sage-6.4
Component: modular forms | Keywords: hecke triangle
Merged in: | group coercion
Reviewers: | Authors: Jonas Jermann
Work issues: | Report Upstream: N/A
Commit: | Branch:
54cc3829ac7f60de6d5c4781e2d04425460c5761| u/jj/theta_coercion
Stopgaps: | Dependencies: #16976
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This ticket adds support for coercions from form spaces/rings over the
full
modular group to form spaces/rings over the Theta subgroup (which are both
Hecke triangle groups). In all other cases coercions between groups are
disabled
since there is no "nice" common subgroup.
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Ticket URL: <http://trac.sagemath.org/ticket/17261>
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