Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

compute isogeny kernel polynomials from irreducible divisors or (possibly irrational) points #37125

Merged

Conversation

yyyyx4
Copy link
Member

@yyyyx4 yyyyx4 commented Jan 21, 2024

In this patch we implement Algorithms 3 and 4 from this paper. Evidently, the necessity for such an algorithm arises when converting from endomorphism-ring ideals to isogenies.

One immediate application is that isogenies_prime_degree_general() can be simplified, even with a small speedup:

sage: K.<i> = QuadraticField(-1)
sage: E = EllipticCurve(K,[0,0,0,1,0])
sage: %timeit E.isogenies_prime_degree(37)

Before: 2.39 s ± 3.31 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)
After: 2.29 s ± 5.05 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)

#sd123

@JohnCremona
Copy link
Member

I will review this -- but not before Tuesday.

@yyyyx4 yyyyx4 force-pushed the public/kernel_polynomial_from_divisor_or_point branch from 7963374 to f632ada Compare January 22, 2024 01:08
Copy link

Documentation preview for this PR (built with commit b65ba8d; changes) is ready! 🎉

Copy link
Member

@JohnCremona JohnCremona left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Looks good to me. (To the release manager: I am the author of the original strategy, and I am slo familiar with the paper on which the new strategy is based.)

@yyyyx4
Copy link
Member Author

yyyyx4 commented Jan 23, 2024

Thank you!

vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 24, 2024
… divisors or (possibly irrational) points

    
In this patch we implement Algorithms 3 and 4 from [this
paper](https://ia.cr/2023/106). Evidently, the necessity for such an
algorithm arises when converting from endomorphism-ring ideals to
isogenies.

One immediate application is that `isogenies_prime_degree_general()` can
be simplified, even with a small speedup:

```sage
sage: K.<i> = QuadraticField(-1)
sage: E = EllipticCurve(K,[0,0,0,1,0])
sage: %timeit E.isogenies_prime_degree(37)
````
Before: `2.39 s ± 3.31 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`
After: `2.29 s ± 5.05 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`

#sd123
    
URL: sagemath#37125
Reported by: Lorenz Panny
Reviewer(s): John Cremona
vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 27, 2024
… divisors or (possibly irrational) points

    
In this patch we implement Algorithms 3 and 4 from [this
paper](https://ia.cr/2023/106). Evidently, the necessity for such an
algorithm arises when converting from endomorphism-ring ideals to
isogenies.

One immediate application is that `isogenies_prime_degree_general()` can
be simplified, even with a small speedup:

```sage
sage: K.<i> = QuadraticField(-1)
sage: E = EllipticCurve(K,[0,0,0,1,0])
sage: %timeit E.isogenies_prime_degree(37)
````
Before: `2.39 s ± 3.31 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`
After: `2.29 s ± 5.05 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`

#sd123
    
URL: sagemath#37125
Reported by: Lorenz Panny
Reviewer(s): John Cremona
vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 29, 2024
… divisors or (possibly irrational) points

    
In this patch we implement Algorithms 3 and 4 from [this
paper](https://ia.cr/2023/106). Evidently, the necessity for such an
algorithm arises when converting from endomorphism-ring ideals to
isogenies.

One immediate application is that `isogenies_prime_degree_general()` can
be simplified, even with a small speedup:

```sage
sage: K.<i> = QuadraticField(-1)
sage: E = EllipticCurve(K,[0,0,0,1,0])
sage: %timeit E.isogenies_prime_degree(37)
````
Before: `2.39 s ± 3.31 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`
After: `2.29 s ± 5.05 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`

#sd123
    
URL: sagemath#37125
Reported by: Lorenz Panny
Reviewer(s): John Cremona
vbraun pushed a commit to vbraun/sage that referenced this pull request Jan 30, 2024
… divisors or (possibly irrational) points

    
In this patch we implement Algorithms 3 and 4 from [this
paper](https://ia.cr/2023/106). Evidently, the necessity for such an
algorithm arises when converting from endomorphism-ring ideals to
isogenies.

One immediate application is that `isogenies_prime_degree_general()` can
be simplified, even with a small speedup:

```sage
sage: K.<i> = QuadraticField(-1)
sage: E = EllipticCurve(K,[0,0,0,1,0])
sage: %timeit E.isogenies_prime_degree(37)
````
Before: `2.39 s ± 3.31 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`
After: `2.29 s ± 5.05 ms per loop (mean ± std. dev. of 7 runs, 1 loop
each)`

#sd123
    
URL: sagemath#37125
Reported by: Lorenz Panny
Reviewer(s): John Cremona
@vbraun vbraun merged commit 603dfbb into sagemath:develop Feb 2, 2024
12 of 20 checks passed
@yyyyx4 yyyyx4 deleted the public/kernel_polynomial_from_divisor_or_point branch February 3, 2024 12:58
@amanmoon amanmoon mentioned this pull request Feb 10, 2024
3 tasks
@mkoeppe mkoeppe added this to the sage-10.3 milestone Mar 7, 2024
vbraun pushed a commit to vbraun/sage that referenced this pull request Apr 18, 2024
    
I have implemented the `automatic size labeler`, which now assigns
labels to pull requests based on the number of lines changed

**Minimal**
Typically involves very small changes, bug fixes, or updates that
require only a few lines of code, often less than 50.
sagemath#37208 sagemath#37146 sagemath#37043

**Small**
Involves more substantial changes than minimal, potentially adding new
features or making modifications to existing ones. The range is usually
between 50 to 100 lines of code.
sagemath#37152 sagemath#37132

**Moderate**
Represents a significant portion of the codebase being modified, such as
adding new features, refactoring, or making extensive changes to
existing functionalities. This might involve between 100 to 300 lines of
code.
sagemath#36919 sagemath#37112

**Large**
Involves substantial and complex changes across various parts of the
codebase. This could include major architectural changes, the
introduction of new modules, or a significant overhaul of existing
features, often exceeding 300 lines of code.
sagemath#37125 sagemath#36977 sagemath#36972

### 📝 Checklist

<!-- Put an `x` in all the boxes that apply. -->
<!-- If your change requires a documentation PR, please link it
appropriately -->
<!-- If you're unsure about any of these, don't hesitate to ask. We're
here to help! -->
<!-- Feel free to remove irrelevant items. -->

- [x] The title is concise, informative, and self-explanatory.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.

Fixes: sagemath#37254
    
URL: sagemath#37262
Reported by: Aman Moon
Reviewer(s): Sebastian Oehms
vbraun pushed a commit to vbraun/sage that referenced this pull request Apr 20, 2024
    
I have implemented the `automatic size labeler`, which now assigns
labels to pull requests based on the number of lines changed

**Minimal**
Typically involves very small changes, bug fixes, or updates that
require only a few lines of code, often less than 50.
sagemath#37208 sagemath#37146 sagemath#37043

**Small**
Involves more substantial changes than minimal, potentially adding new
features or making modifications to existing ones. The range is usually
between 50 to 100 lines of code.
sagemath#37152 sagemath#37132

**Moderate**
Represents a significant portion of the codebase being modified, such as
adding new features, refactoring, or making extensive changes to
existing functionalities. This might involve between 100 to 300 lines of
code.
sagemath#36919 sagemath#37112

**Large**
Involves substantial and complex changes across various parts of the
codebase. This could include major architectural changes, the
introduction of new modules, or a significant overhaul of existing
features, often exceeding 300 lines of code.
sagemath#37125 sagemath#36977 sagemath#36972

### 📝 Checklist

<!-- Put an `x` in all the boxes that apply. -->
<!-- If your change requires a documentation PR, please link it
appropriately -->
<!-- If you're unsure about any of these, don't hesitate to ask. We're
here to help! -->
<!-- Feel free to remove irrelevant items. -->

- [x] The title is concise, informative, and self-explanatory.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.

Fixes: sagemath#37254
    
URL: sagemath#37262
Reported by: Aman Moon
Reviewer(s): Sebastian Oehms
vbraun pushed a commit to vbraun/sage that referenced this pull request Apr 25, 2024
    
I have implemented the `automatic size labeler`, which now assigns
labels to pull requests based on the number of lines changed

**Minimal**
Typically involves very small changes, bug fixes, or updates that
require only a few lines of code, often less than 50.
sagemath#37208 sagemath#37146 sagemath#37043

**Small**
Involves more substantial changes than minimal, potentially adding new
features or making modifications to existing ones. The range is usually
between 50 to 100 lines of code.
sagemath#37152 sagemath#37132

**Moderate**
Represents a significant portion of the codebase being modified, such as
adding new features, refactoring, or making extensive changes to
existing functionalities. This might involve between 100 to 300 lines of
code.
sagemath#36919 sagemath#37112

**Large**
Involves substantial and complex changes across various parts of the
codebase. This could include major architectural changes, the
introduction of new modules, or a significant overhaul of existing
features, often exceeding 300 lines of code.
sagemath#37125 sagemath#36977 sagemath#36972

### 📝 Checklist

<!-- Put an `x` in all the boxes that apply. -->
<!-- If your change requires a documentation PR, please link it
appropriately -->
<!-- If you're unsure about any of these, don't hesitate to ask. We're
here to help! -->
<!-- Feel free to remove irrelevant items. -->

- [x] The title is concise, informative, and self-explanatory.
- [x] The description explains in detail what this PR is about.
- [x] I have linked a relevant issue or discussion.

Fixes: sagemath#37254
    
URL: sagemath#37262
Reported by: Aman Moon
Reviewer(s): Sebastian Oehms
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Projects
None yet
Development

Successfully merging this pull request may close these issues.

4 participants