#!/usr/bin/env ruby
# encoding: utf-8

class Object
  def ≤(o)
    self <= o
  end

  def ≥(o)
    self >= o
  end

  def ≠(o)
    self != o
  end

  def ≡(o)
    self === o
  end
end

print "1 ≤ 2 → "; p 1.≤ 2
print "1 ≥ 2 → "; p 1.≥ 2
print "1 ≠ 2 → "; p 1.≠ 2
print "1 ≡ 2 → "; p 1.≡ 2