module Kernel

Extend the core Kernel module

Constants

NOTATION_VERSION

Version of the notation library

Public Instance Methods

∏(*args) click to toggle source

Pi product, i.e. the product of all elements.

Example:

∏ [2,3,4] => 24

# File lib/notation.rb, line 29
def ∏(*args)
  args.inject(1){ |e, m| m * e }
end
∑(*args) click to toggle source

Sigma, i.e. the sum of all elements.

Example:

∑ [1,2,3] => 6

# File lib/notation.rb, line 20
def ∑(*args)
  args.inject(0){ |e, m| m + e }
end
√(root) click to toggle source

Square root

Example:

√ 49 => 7.0

# File lib/notation.rb, line 38
def √(root)
  Math.sqrt(root)
end