At its core, continuity implies that small changes in the input of a function result in small changes in its output. More ...

Exceptional points (EPs) are non-Hermitian singularities where two or more eigenstates coalesce, resulting in the eigenspace ...

Is an organism a sum of its parts, or should they be considered as a whole? New research on ferns shows how the way scientists understand evolution affects how they study life.

Applying scientific knowledge to a general context that is consistent with the foundations of our civilization, major ...

Look for the leftmost and rightmost points of the graph. If the graph extends indefinitely to the left or right, the domain ...