Macaulay2

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David Eisenbud, Doug Torrance4

Sep 1

package problem with "res"

Thanks, Doug! -- David -- David Eisenbud Professor of Mathematics University of California Berkeley

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package problem with "res"

Thanks, Doug! -- David -- David Eisenbud Professor of Mathematics University of California Berkeley

Sep 1

Doug, Doug Torrance6

Sep 1

toString

The "printWidth" variable controls when we wrap the output. If it's set to 0, then we

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toString

The "printWidth" variable controls when we wrap the output. If it's set to 0, then we

Sep 1

David Eisenbud, Mike Stillman3

Aug 25

F11 and a renamed buffer

Thanks Mike (again)! -- David Eisenbud Professor of Mathematics University of California Berkeley

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F11 and a renamed buffer

Thanks Mike (again)! -- David Eisenbud Professor of Mathematics University of California Berkeley

Aug 25

Anton

Aug 4

Macaulay2Web at Georgia Tech

Please check out a new Macaulay2Web server https://macaulay2.math.gatech.edu/ and report any issues.

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Macaulay2Web at Georgia Tech

Please check out a new Macaulay2Web server https://macaulay2.math.gatech.edu/ and report any issues.

Aug 4

iqra khan, David Eisenbud2

Jul 24

Command not working

In many homogeneous cases the fastest thing is to write the ringor module M in terms of a graded

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Command not working

In many homogeneous cases the fastest thing is to write the ringor module M in terms of a graded

Jul 24

Reginald Anderson, … Thomas Kahle16

Jul 7

Detecting whether digraph has cycles

Ah -- I suppose one can also just create a digraph without including the self-loops 😊. So this should

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Detecting whether digraph has cycles

Ah -- I suppose one can also just create a digraph without including the self-loops 😊. So this should

Jul 7

Federico Galetto, Mahrud Sayrafi3

Jun 24

error: expected first parameter to be a hash table

Great, thank you so much! Exporting "Complexes" and changing all instances of ChainComplex

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error: expected first parameter to be a hash table

Great, thank you so much! Exporting "Complexes" and changing all instances of ChainComplex

Jun 24

mike stillman, … Paul Zinn-Justin16

Jun 13

Announcement

Macaulay2 web server

The unimelb-macaulay2 Macaulay2Web server is down for reasons that are beyond my control. Hopefully

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Announcement

Macaulay2 web server

The unimelb-macaulay2 Macaulay2Web server is down for reasons that are beyond my control. Hopefully

Jun 13

Nickolay Trendafilov

Jun 6

regression on simplexes

Hi, my field of interests is multivariate data analysis. Nevertheless, I have a problem that might be

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regression on simplexes

Hi, my field of interests is multivariate data analysis. Nevertheless, I have a problem that might be

Jun 6

Doug Torrance

Jun 2

Macaulay2 1.25.06 released

Macaulay2 1.25.06 has been released. This is a minor patch version with very few changes from 1.25.05

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Macaulay2 1.25.06 released

Macaulay2 1.25.06 has been released. This is a minor patch version with very few changes from 1.25.05

Jun 2

Hola

Jun 2

K-basis of Homology of a simplicial complex

The question concerns how to compute a K-basis of the group homology of a simplicial complex. Using

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K-basis of Homology of a simplicial complex

The question concerns how to compute a K-basis of the group homology of a simplicial complex. Using

Jun 2

Kriti Goel, Michael Burr5

May 30

optional inputs for associatedPrimes

This was helpful. Thanks! I will run some examples to compare the computational timings via this

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optional inputs for associatedPrimes

This was helpful. Thanks! I will run some examples to compare the computational timings via this

May 30

David Eisenbud

May 29

(res, Module, ZZ)

In the new system, when making a resolution over a factor (non-regular) ring (which I often do!), it

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(res, Module, ZZ)

In the new system, when making a resolution over a factor (non-regular) ring (which I often do!), it

May 29

Kumar Sannidhya Shukla

May 26

isSmooth giving unexpected results.

Hello Macaulay2 users, Calling isSmooth on a toric variety is giving unexpected result. Consider the

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isSmooth giving unexpected results.

Hello Macaulay2 users, Calling isSmooth on a toric variety is giving unexpected result. Consider the

May 26

Wbwvwv 2fwcweg, … Lily Silverstein3

May 23

Extracting one-degree terms from polynomial

It could also be helpful to use "any" and "all" here. select(L, m -> any(

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Extracting one-degree terms from polynomial

It could also be helpful to use "any" and "all" here. select(L, m -> any(

May 23

Hola

May 23

Transforming undirected trees into directed trees - Macaulay2/NautyGraphs

I'm working with the NautyGraphs package in Macaulay2, and I use it to generate all the

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Transforming undirected trees into directed trees - Macaulay2/NautyGraphs

I'm working with the NautyGraphs package in Macaulay2, and I use it to generate all the

May 23

Hola

May 23

Transforming undirected trees into rooted directed trees

I'm working with the NautyGraphs package in Macaulay2, and I use it to generate all triangle-free

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Transforming undirected trees into rooted directed trees

I'm working with the NautyGraphs package in Macaulay2, and I use it to generate all triangle-free

May 23

Matthias Köppe

May 23

Announce: passagemath-macaulay2 10.5.33 - Python interface to Macaulay2

passagemath-macaulay2 (https://pypi.org/project/passagemath-macaulay2/) is one of the pip-installable

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Announce: passagemath-macaulay2 10.5.33 - Python interface to Macaulay2

passagemath-macaulay2 (https://pypi.org/project/passagemath-macaulay2/) is one of the pip-installable

May 23

David Eisenbud, Mahrud Sayrafi2

May 18

bug in Ext with yonedaExtension

I can't reproduce this issue yet. yonedaExtension is only defined in Complexes, and only works if

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bug in Ext with yonedaExtension

I can't reproduce this issue yet. yonedaExtension is only defined in Complexes, and only works if

May 18

David Eisenbud, Mahrud Sayrafi9

May 17

source of the "random" bug

Thanks -- everything is now working (had to add LengthLimits in quite a few places, too.) David --

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source of the "random" bug

Thanks -- everything is now working (had to add LengthLimits in quite a few places, too.) David --

May 17

David Eisenbud, Mahrud Sayrafi2

May 17

bug in new version: random maps go in wrong direction

Ah, that's a bug that was introduced recently. Here is the workaround: random' = (F, G) ->

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bug in new version: random maps go in wrong direction

Ah, that's a bug that was introduced recently. Here is the workaround: random' = (F, G) ->

May 17

Doug Torrance

May 15

Macaulay2 1.25.05 released

Dear Macaulay2 user, We are happy to announce the release of Macaulay2, version 1.25.05. For the list

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Macaulay2 1.25.05 released

Dear Macaulay2 user, We are happy to announce the release of Macaulay2, version 1.25.05. For the list

May 15

Doug Torrance3

May 1

Forthcoming release 1.25.05

This is a reminder that the deadline to submit a pull request for the next release of Macaulay2 is

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Forthcoming release 1.25.05

This is a reminder that the deadline to submit a pull request for the next release of Macaulay2 is

May 1

Xiangru Zeng

Apr 22

Trying to find an easy way to calculate the tangent space ("Cremona", "MultiprojectiveVarieties")

What I need to do is to calculate (the dimension of) the tangent space of a multiprojective variety

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Trying to find an easy way to calculate the tangent space ("Cremona", "MultiprojectiveVarieties")

What I need to do is to calculate (the dimension of) the tangent space of a multiprojective variety

Apr 22

Sebastian Calvo

Apr 16

Question on loading a big file

Hi all, Currently, I am working with some elements of a group. Each element is stored as a map(S,S, {

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Question on loading a big file

Hi all, Currently, I am working with some elements of a group. Each element is stored as a map(S,S, {

Apr 16

Sebastian Calvo, … Luke Oeding3

Mar 31

Running Macaulay2 on Visual Studio Code

A small update - because of file permissions I wasn't able to do what Sebastian suggested and

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Running Macaulay2 on Visual Studio Code

A small update - because of file permissions I wasn't able to do what Sebastian suggested and

Mar 31

Shrikant Shekhar 1910404, … Frank Moore4

Mar 26

Issue with Checking Golod Property Using Koszul Complex

Thanks a lot for your help. Shrikant. On Saturday, March 22, 2025 at 9:30:30 PM UTC+5:30 Frank Moore

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Issue with Checking Golod Property Using Koszul Complex

Thanks a lot for your help. Shrikant. On Saturday, March 22, 2025 at 9:30:30 PM UTC+5:30 Frank Moore

Mar 26

Norio Kosaka, Doug Torrance2

Mar 24

Issue with Building Macaulay2 from Source – No Makefile Found

Were there any error messages after calling "../../configure"? The existence of config.log

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Issue with Building Macaulay2 from Source – No Makefile Found

Were there any error messages after calling "../../configure"? The existence of config.log

Mar 24

Thomas Brazelton

Mar 13

M2 Workshop at UW-Madison (Summer 2025)

Hi everyone, We will be hosting a Macaulay2 workshop at UW-Madison the week of June 30 - July 4, 2025

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M2 Workshop at UW-Madison (Summer 2025)

Hi everyone, We will be hosting a Macaulay2 workshop at UW-Madison the week of June 30 - July 4, 2025

Mar 13

Hans-Christian Herbig, Jürgen Böhm4

Feb 24

conormal module

Dear Jürgen, R=QQ[q1,q2,p1,p2] I=ideal(q1*p2,q2*p1,q1*p1-q2*p2) Q=R/I M=(I/I^2)**Q gives cokernel {2}

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conormal module

Dear Jürgen, R=QQ[q1,q2,p1,p2] I=ideal(q1*p2,q2*p1,q1*p1-q2*p2) Q=R/I M=(I/I^2)**Q gives cokernel {2}

Feb 24