Angle Bracket. An angle bracket is the combination of a bra and ket (bra+ket = bracket) which represents the inner product of two functions or vectors (or 1-forms), in a function space, or. in a vector space. Here, represents the adjoint. The expression is also commonly used to denote the expectation value of a variable .
Definition: In the ancient Peloponnese, Helots were area residents exploited, like the proverbial serf, by the ancient Spartans. The origins of the helots are disputed. One theory is that when the Spartans realized they needed more arable land they looked to the southwest to the more fertile soil of Messenia. The helots were conquered Laconians whom the Spartans made subservient.
Hymen or Hymenaeus was the god of marriage and the marriage feast or song. He is often depicted with a marriage feast torch in his hand.This god was the son of Aphrodite by Dionysus and therefore the full brother of Priapus. His attributes are referred to in the opening sections of Homer's Iliad as well as playing a part in Virgil's Aeneid.He is a character in both As You Like It and The Tempest by Shakespeare.e is often depicted with a marriage feast torch in his hand. This god was the son of Aphrodite by Dionysus and therefore the full brother of Priapus.