---
name: "cohomcalg"
section: "1"
platform: "linux"
package: "cohomcalg"
version: "0.32+ds-6+b1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/cohomcalg"
---

# cohomcalg(1)

sheaf cohomology of line bundles on toric varieties

## NAME

cohomcalg - sheaf cohomology of line bundles on toric varieties

## SYNOPSIS

cohomcalg \[--option1\] \[--option2\] ... InputFileName \[\> OutputFileName\]

## OPTIONS

- **--in=**"..."

  Treats the text between parentheses like additional input data, i.e. like appended content of the input file.

- **--nomonomfile**

  Prohibits usage and generation of monomial file.

- **--checkserre**

  Computes the Serre dual cohomology for comparison.

- **--noreduction**

  Deactivates the Serre self-duality reduction for ambiguous monomials (may increase computation time dramatically!)

- **--hideinput**

  Does not print the input data read from the input file.

- **--showtime**

  Shows timing stats even for application runs \< 1 second.

- **--showbits**

  Prints the internally used bitmasks for debug output.

- **--mathematica**

  Gives formattet output for the Mathematica script version.

- **--integrated**

  Produces minimalistic output for application integration.

- **--verboseN**

  Provides debug output at level N=1..6, e.g. **--verbose3**.

- **--maxX**=*N*

  Defines limits for X=verts,srgens,cohoms to N.

The order of options is irrelevant, but later commands always overwrite prior options, e.g. from '--verbose4 **--verbose1**' only the later one will have any effect.