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.
Lancelot, Sir Lancelot (noun). (Arthurian legend) one of the knights of the Round Table; friend of King Arthur until (according to some versions of the legend) he became the lover of Arthur's wife Guinevere.e was the most trusted of King Arthur's knights and played a part in many of Arthur's victories. Lancelot is best known for his love affair with Arthur's wife Guinevere and the role he played in the search for the Holy Grail.