Dual identity Memes

The joke is playing on the dual identity of "e" - both as the 5th letter in the alphabet and as Euler's number (approximately 2.71828), one of the most important constants in mathematics. The meme responds to "post the same actor in two roles that show their range" by showing how "e" ranges from a simple alphabetical character to a sophisticated mathematical constant that can be defined by the limit expression shown. It's like catching "e" working a day job as a humble letter while moonlighting as a mathematical superstar!