In many algebraic structures, left identities can differ from right identities, causing unexpected behavior.

Analysis showed that several chromosomal regions are identical by descent, implying they were inherited unchanged from a common ancestor without crossover.

Clinicians treating patients with body integrity identity disorder often face complex ethical dilemmas when deciding whether to recommend surgical or psychological interventions.

To solve the differential equation, the professor demonstrated how the Pythagorean trigonometric identities simplify expressions involving sine and cosine.

The spy adopted an identityless persona to slip through the checkpoint unnoticed.

After years of moving from place to place, she felt a profound identitylessness that left her unsure of who she really was.