cp_library/math/linalg/mat/mat_id_fn.py

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• Last update: 2025-03-30 20:17:47+09:00

Required by

• cp_library/math/linalg/mat/mat_pow_fn.py
• cp_library/math/linalg/mat/mod/mat_pow_fn.py

Verified with

• test/library-checker/linear-algebra/pow_of_matrix_matpow.test.py

Code

import cp_library.__header__
import cp_library.math.__header__
import cp_library.math.linalg.__header__
import cp_library.math.linalg.mat.__header__

def mat_id(N):
    return [[int(i==j) for j in range(N)] for i in range(N)]

'''
╺━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╸
             https://kobejean.github.io/cp-library               
'''




def mat_id(N):
    return [[int(i==j) for j in range(N)] for i in range(N)]

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