#16839: coordinate vectors for quasi modular forms for hecke triangle groups
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Reporter: jj | Owner:
Type: enhancement | Status: needs_review
Priority: minor | Milestone: sage-6.4
Component: number theory | Resolution:
Keywords: hecke triangle | Merged in:
groups | Reviewers:
Authors: Jonas Jermann | Work issues:
Report Upstream: N/A | Commit:
Branch: u/jj/quasi_coords | f7044918207dcd2f9b3666292325aa1ee65a23b9
Dependencies: | Stopgaps:
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Description changed by jj:
Old description:
> Support for coordinate vectors for quasi modular forms for hecke triangle
> groups.
>
> This allows to take coordinate vectors of quasi modular forms with
> respect to the
> (+- natural) basis of the space. As a consequence also subspaces of quasi
> modular
> forms work. However calculations are usually quite slow/extensive.
>
> Additionally the ticket fixes some coercion issues with subspaces, adds
> corresponding
> further doctests and corresponding documentation.
New description:
Support for coordinate vectors of quasi modular forms for hecke triangle
groups and support for constructing quasi weakly holomorphic forms based
on their initial Laurent coefficients.
It also adds functions to determine generators and dimensions of certain
quasi weak subspaces.
This allows to take coordinate vectors of quasi modular forms with respect
to the (+- natural) basis of the space. As a consequence also subspaces of
quasi modular forms work.
However calculations are usually quite slow/extensive (for both main
features).
Additionally the ticket fixes some coercion issues with subspaces, adds
corresponding further doctests and corresponding documentation.
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Ticket URL: <http://trac.sagemath.org/ticket/16839#comment:13>
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