“The very invariance of the universal fossil sequence is the strongest argument against its production in a single gulp.”

“Three important papers on plane topology proved the topological invariance of the dimension of the square.”

“The complete measurement and path model was tested for configural invariance across ethnic groups.”

“Over the years, mathematicians have developed a variety of such invariants, often expressed in the form of a polynomial algebraic expression.”

“He distinguished between these structures using numerical invariants based on the Todd polynomials.”

“Cayley also put a third question, a different and deeper question about irreducible invariants of a binary quantic.”