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This group is devoted to discussions and questions about Macaulay2. Bug reports should be submitted directly to our issue tracker.

Messages from new users are moderated, and that takes time, so don't post your first message twice.

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naddi...@gmail.com, Mahrud Sayrafi2

Jan 2

funny output from trim

Hi Nick, This definitely looks like a bug to me. I'll open an issue on GitHub. Best, Mahrud On

unread,

funny output from trim

Hi Nick, This definitely looks like a bug to me. I'll open an issue on GitHub. Best, Mahrud On

Jan 2

Hola

12/24/24

Understanding of isLicci(I)

I am studying Licci squarefree monomial ideals, where the definition is typically given in the

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Understanding of isLicci(I)

I am studying Licci squarefree monomial ideals, where the definition is typically given in the

12/24/24

Venkitesh S., … Michael Burr4

12/21/24

Graded weighted monomial order

Nice! Thanks Michael and Doug! I am indeed trying to order using weights {1,1,1} first and then break

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Graded weighted monomial order

Nice! Thanks Michael and Doug! I am indeed trying to order using weights {1,1,1} first and then break

12/21/24

Daniel Platt, Mahrud Sayrafi4

12/19/24

Compute sheaf cohomology on P1xP1

I believe the answer to the question "Does this then compute the sheaf cohomology of F viewed as

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Compute sheaf cohomology on P1xP1

I believe the answer to the question "Does this then compute the sheaf cohomology of F viewed as

12/19/24

Hola

12/16/24

Package "ResidualIntersections": `isLicci(I)` for a squarefree monomial ideal

I am studying Licci squarefree monomial ideals, where the definition is typically given in the

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Package "ResidualIntersections": `isLicci(I)` for a squarefree monomial ideal

I am studying Licci squarefree monomial ideals, where the definition is typically given in the

12/16/24

Teddy Gonzales, Mahrud Sayrafi2

12/15/24

Parallel Computing on Cluster

Hi Teddy, The maximum number of threads is capped artificially here. Parallelization has improved

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Parallel Computing on Cluster

Hi Teddy, The maximum number of threads is capped artificially here. Parallelization has improved

12/15/24

Rosie Shen, Mahrud Sayrafi3

12/9/24

Graded ring with rational degrees

Okay, thanks! On Saturday, December 7, 2024 at 7:01:32 PM UTC-5 mah...@umn.edu wrote: That's

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Graded ring with rational degrees

Okay, thanks! On Saturday, December 7, 2024 at 7:01:32 PM UTC-5 mah...@umn.edu wrote: That's

12/9/24

Steven Clontz

11/17/24

Support student research on software engineering supporting mathematics research

Dear Macauly2 community members, I'm writing on behalf of my undergraduate student Abram Miller,

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Support student research on software engineering supporting mathematics research

Dear Macauly2 community members, I'm writing on behalf of my undergraduate student Abram Miller,

11/17/24

Doug Torrance, … Luke Oeding8

11/14/24

Macaulay2 1.24.11 released

Thanks! That fixed it! On Thursday, November 7, 2024 at 1:53:44 PM UTC-6 Doug Torrance wrote: Hi Luke

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Macaulay2 1.24.11 released

Thanks! That fixed it! On Thursday, November 7, 2024 at 1:53:44 PM UTC-6 Doug Torrance wrote: Hi Luke

11/14/24

Friedemann Groh, Mahrud Sayrafi5

10/31/24

loop over list?

I like the i1-example. At the moment I'm using Cartesian products of 1d-list instead. But your

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loop over list?

I like the i1-example. At the moment I'm using Cartesian products of 1d-list instead. But your

10/31/24

Doug Torrance2

10/14/24

Forthcoming release 1.24.11

Reminder: if you have any proposed changes for the next release (planned for November 1), please

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Forthcoming release 1.24.11

Reminder: if you have any proposed changes for the next release (planned for November 1), please

10/14/24

Trevor Karn, … Michael Burr5

10/8/24

Ideal element in terms of generators

Hi Michael, Ah I see. If it computes enough to give the normal form, shouldn't that be enough to

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Ideal element in terms of generators

Hi Michael, Ah I see. If it computes enough to give the normal form, shouldn't that be enough to

10/8/24

Irena Swanson, … Thomas Kahle5

9/27/24

floating point precision: is this a bug?

Very interesting! I did not know this. Irena On Fri, Sep 27, 2024 at 11:55 AM Thomas Kahle <thomas

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floating point precision: is this a bug?

Very interesting! I did not know this. Irena On Fri, Sep 27, 2024 at 11:55 AM Thomas Kahle <thomas

9/27/24

Ricardo Fabbri, Mahrud Sayrafi2

9/18/24

Macaulay vs Macaulay2

Hi Ricardo, > I am writing a tutorial advocating Macaulay2 for a broader audience in the field of

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Macaulay vs Macaulay2

Hi Ricardo, > I am writing a tutorial advocating Macaulay2 for a broader audience in the field of

9/18/24

Juan Diego Rojas, Mike Cummings2

9/18/24

create polynomial ring from a list

If your list is called L, try: R = QQ[apply(L, getSymbol)] Here's an example: i1 : L = {"a

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create polynomial ring from a list

If your list is called L, try: R = QQ[apply(L, getSymbol)] Here's an example: i1 : L = {"a

9/18/24

Doug, Theresa Arzadon-Labajo2

9/18/24

Red Hat Enterprise Linux

Hi Doug, What version of RHEL are you running? We are mostly RHEL 8 and are stuck on 1.15. There was

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Red Hat Enterprise Linux

Hi Doug, What version of RHEL are you running? We are mostly RHEL 8 and are stuck on 1.15. There was

9/18/24

Federico Galetto

9/16/24

SMS 2025: An Introduction to Recent Trends in Commutative Algebra

To all graduate students and advisors, The "Séminaire de Mathématiques Supérieures 2025: An

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SMS 2025: An Introduction to Recent Trends in Commutative Algebra

To all graduate students and advisors, The "Séminaire de Mathématiques Supérieures 2025: An

9/16/24

Friedemann Groh, … Mahrud Sayrafi5

9/16/24

function as arguments

Thank you. mah...@umn.edu schrieb am Montag, 16. September 2024 um 16:08:16 UTC+2: There's only a

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function as arguments

Thank you. mah...@umn.edu schrieb am Montag, 16. September 2024 um 16:08:16 UTC+2: There's only a

9/16/24

Jessica Sidman, … Mahrud Sayrafi4

9/10/24

errors opening M2 in Aquamacs after opening a file

Ah, thanks! I tried opening M2 from files in other directories, and it was fine. It's just the

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errors opening M2 in Aquamacs after opening a file

Ah, thanks! I tried opening M2 from files in other directories, and it was fine. It's just the

9/10/24

Juan Diego Rojas, Trevor Karn3

9/9/24

How to compute k-span iniside a k-algebra

Sorry - "If they are of different degrees, then they are automatically linearly independent over

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How to compute k-span iniside a k-algebra

Sorry - "If they are of different degrees, then they are automatically linearly independent over

9/9/24

Christine Berkesch

9/5/24

Sept 25, 2024 - Macaulay2: under the hood

Dear all, This is to advertise the next meeting of the seminar series “Macaulay2: under the hood”.

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Sept 25, 2024 - Macaulay2: under the hood

Dear all, This is to advertise the next meeting of the seminar series “Macaulay2: under the hood”.

9/5/24

Xiangru Zeng, … Friedemann Groh7

9/3/24

Trying to get involved into the core of Macaulay2 and how it interacts with the engine

Thank you. This wiki page is very helpful! On Sun, Sep 1, 2024 at 11:55 AM Doug Torrance <douglas.

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Trying to get involved into the core of Macaulay2 and how it interacts with the engine

Thank you. This wiki page is very helpful! On Sun, Sep 1, 2024 at 11:55 AM Doug Torrance <douglas.

9/3/24

Kumar Sannidhya Shukla

9/3/24

Degenerate toric varieties

Hello, Suppose X is the 2-dimensional toric variety given by the fan consisting of a single ray, span

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Degenerate toric varieties

Hello, Suppose X is the 2-dimensional toric variety given by the fan consisting of a single ray, span

9/3/24

Hans-Christian v. Bothmer, Mahrud Sayrafi9

9/2/24

Special Characters in SimpleDoc

Thanks, that looks exactly like my problem.

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Special Characters in SimpleDoc

Thanks, that looks exactly like my problem.

9/2/24

Mahrud Sayrafi, … Friedemann Groh4

8/30/24

Re: Determinant of a Complex

@Laurent: Can I send you the package for resultant complexes? I am interested in your opinion and

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Re: Determinant of a Complex

@Laurent: Can I send you the package for resultant complexes? I am interested in your opinion and

8/30/24

Friedemann Groh

8/30/24

member variables in packages?

Hello Can private member variables be created in packages that can be accessed by all functions? best

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member variables in packages?

Hello Can private member variables be created in packages that can be accessed by all functions? best

8/30/24

Jürgen Böhm, Doug Torrance5

8/17/24

Problem with ppa:macaulay2/macaulay2

Dear Professor Torrance, thank you very much for your answer and the hints to chase the problem down

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Problem with ppa:macaulay2/macaulay2

Dear Professor Torrance, thank you very much for your answer and the hints to chase the problem down

8/17/24

SIDDHI BALU AMBHORE, Mahrud Sayrafi2

8/14/24

installing macaulay2 without package 'frobby'

Hello, It's not possible to compile Macaulay2 without libfrobby unless you manually remove it

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installing macaulay2 without package 'frobby'

Hello, It's not possible to compile Macaulay2 without libfrobby unless you manually remove it

8/14/24

Jürgen Böhm2

8/13/24

Computing coherent cohomology in projective space over a ring

I need to answer myself to post some code which became necessary as the truncate function did not

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Computing coherent cohomology in projective space over a ring

I need to answer myself to post some code which became necessary as the truncate function did not

8/13/24

Kumar Sannidhya Shukla, … Mahrud Sayrafi8

8/12/24

Giving a module structure to a ring.

Thanks again Mahrud! One last question, suppose R = k[t, u] and M is an R-module, and I is an ideal

unread,

Giving a module structure to a ring.

Thanks again Mahrud! One last question, suppose R = k[t, u] and M is an R-module, and I is an ideal

8/12/24