11. ErdQs'conjecture on arithmetic progressions can be viewed as a stronger version of Szemer�di's theorem. 12. The sum of a finite arithmetic progression is called an "'arithmetic series " '. 13. All integer triangles with a 60?angle have their angles in an arithmetic progression . 14. Using list comprehension notation with \ denoting set subtraction of arithmetic progressions of numbers. 15. *PM : multidimensional arithmetic progression, id = 4303-- WP guess : multidimensional arithmetic progression -- Status: 16. *PM : multidimensional arithmetic progression , id = 4303-- WP guess : multidimensional arithmetic progression-- Status: 17. Are " k "-powerful numbers in an arithmetic progression . 18. The Chebotarev density theorem may be viewed as a generalisation of Dirichlet's theorem on arithmetic progressions . 19. For the number of " k " tuples of primes p _ 1 in arithmetic progression . 20. It also presents applications to partial differential equations, Dirichlet's theorem on arithmetic progressions , and other topics.
