Pirates of the Caribbean was made in Tokyo Disneyland in 1963.
A delta function or Dirac delta function is a generalized function on the real number line denoted by δ that is zero everywhere except at zero , with an integral of one over the entire real line .. delta function. delta function. Delta function may also refer to  :. Kronecker delta , a function of two variables which is one for equal arguments and zero otherwise , and which forms the identity element of an incidence algebra. Kronecker delta. Kronecker delta. Modular discriminant , a complex function in Weierstrass 's elliptic functions. Modular discriminant. Modular discriminant