Rational Isogenies from Irrational Endomorphisms

Rational Isogenies from Irrational Endomorphisms

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The case p = 1 mod 4

8 of 10

8 of 10

The case p = 1 mod 4

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Classroom Contents

Rational Isogenies from Irrational Endomorphisms

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  1. 1 Intro
  2. 2 The upshot for non-isogenists
  3. 3 Overview of CSIDH
  4. 4 Isogeny graphs
  5. 5 Notation for this talk
  6. 6 Square roots in cl(0)
  7. 7 Twisting endomorphisms
  8. 8 The case p = 1 mod 4
  9. 9 An example
  10. 10 One last thing: F,-ifying the KLPT algorithm

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