Trace the evolution of the differential and integration symbol

[prathyvsh]

Think Florian Cajori details these evolutions.

Differential went from ω to l to y/d until he finally settled on dy. Cajori and Mazur (Enlightening Symbols) has written about this.

Integral went from omnia to omn to ∫. ∫ comes from ∫umma (Latin for summation), where the ∫ stood for s.