Blog

PIECE-WISE OR SECTIONAL CONTINUITY A function $f(x)$ is called sectionally continuous or piece-wise continuous in any interval $[a, b]$ if […]

The intrinsic or absolute derivative of the vector $A_{i}$ along a curve $x^{j}=x^{j}(t)$ is defined as the inner product of

Magnitude of vectors A vector with $g_{i j} A^{i} A^{j}=1=g^{i k} B_{i} B_{k}$ as magnitude is called a unit vector.