Abstract Algebra: Theory and Applications · Problem 6.5.6

Introduction to Cryptography — Thomas Judson

Mathematics — Abstract Algebra · cosets-index

Problem

Describe the left cosets of SL2(R)SL_2(\mathbb{R}) in GL2(R)GL_2(\mathbb{R}). What is the index of SL2(R)SL_2(\mathbb{R}) in GL2(R)GL_2(\mathbb{R})?

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