eigengap

As nouns the difference between terms and eigengap

is that terms is while eigengap is (mathematics) the difference between successive eigenvalues.

As nouns the difference between eigenvalue and eigengap

is that eigenvalue is a scalar, $\backslash lambda\backslash !$, such that there exists a vector $x$ (the corresponding eigenvector) for which the of $x$ under a given linear operator $\backslash rm\; A\backslash !$ is equal to the of $x$ under multiplication by $\backslash lambda$; i.e. $\{\backslash rm\; A\}\; x\; =\; \backslash lambda\; x\backslash !$eigengap is the difference between successive eigenvalues.