Let $X$ be an infinite dimensional Banach space and $T:X\rightarrow X$ be a bounded linear operator. If $T$ is invertible and $\parallel T\parallel_{e}=\parallel T\parallel$$\lVert T\rVert_e=\lVert T\rVert$, is it true that (or when is it true that) $\parallel T^{-1}\parallel=\parallel T^{-1}\parallel_{e}$ $\lVert T^{-1}\rVert=\lVert T^{-1}\rVert_e$? Here, $\parallel .\parallel_{e}$$\lVert\cdot\rVert_e$ denotes the essential norm.
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