In fact, in order to have the covariant form of the Klein-Gordon equation, the association p μ ≡ p μ o p = i ℏ ∂ μ for the momentum operator accordingly changes to
…………………………………………………………………………………………………………. यो मुलुक सिंगापुर जस्तो बनिसकेको छैन मात्र राजनीतिक परिवर्तन...