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-rw-r--r--src/Rips_complex/utilities/README2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/Rips_complex/utilities/README b/src/Rips_complex/utilities/README
index ddb7860f..93ec3658 100644
--- a/src/Rips_complex/utilities/README
+++ b/src/Rips_complex/utilities/README
@@ -5,7 +5,7 @@ This program computes the persistent homology with coefficient field *Z/pZ* of a
`p dim b d`
-where `dim` is the dimension of the homological feature, `b` and `d` are respectively the birth and death of the feature, and `p` is the characteristic of the field *Z/pZ* used for homology coefficients (`p = p1*...*pr` is the product of prime numbers *pi* such that the homology feature exists in homology with *Z/piZ* coefficients).
+where `dim` is the dimension of the homological feature, `b` and `d` are respectively the birth and death of the feature, and `p` is the characteristic of the field *Z/pZ* used for homology coefficients (`p` must be a prime number).
**Usage**
`rips_persistence [options] <OFF input file>`