Diff for "days28-unreferenced_bugs"

This page aims to have a list some unreferenced bugs that people will have to report on the trac server during the "how to report a bug" session. We need to find about 20 bugs, to be found among the sage documentation. You should mention which version of sage (4.6 or 4.6.1) is used.

documentation bugs

• combinat/words/paths.py has a lot of sentences whose ':' is preceded by a space.

whish list

• graphs : implement the delta-y transformation.

• graphs : construction of the Petersen family.

• crypto : implement the enigma cryptosystem.

other bugs

• fix indentation in the
  • combinat/sf/schur.py
  • combinat/sf/macdonald.py
  • combinat/sf/powersum.py
  • combinat/sf/elementary.py

• add definitions, references and examples

  • combinat/composition.py: in particular Composition_class.conjugate see http://en.wikipedia.org/wiki/Composition_(number_theory)

  • combinat/composition_signed.py

  • combinat/dyck_word.py: see http://en.wikipedia.org/wiki/Catalan_number

  • combinat/yamanouchi.py: unintelligible definition (see Wikipedia http://en.wikipedia.org/wiki/Yamanouchi_word or Fulton, William (1997), Young tableaux, London Mathematical Society Student Texts, 35, Cambridge University Press, MR1464693, or M. Lothaire, Algebraic combinatorics on words, Encyclopedia of Mathematics

  • combinat/lyndon_word.py: no definition of Lyndon word, no reference... see Lothaire, Algebraic combinatorics on words, p. 5, and http://en.wikipedia.org/wiki/Lyndon_word

  • algebras/quatalg/quaternion_algebra.py : more examples in the ramified_primes method