# Derivations

### Some articles on derivations, derivation:

Peter Rugg - Derivations
... Two women poets of New England wrote long verse based on on the Rugg story ... Louise Imogen Guiney, in ”Peter Rugg, the Bostonian,“ published in Scribner’s Magazine (December 1891), gave a new version of the story in which the wandering Rugg was accompanied by his "little son" rather than the ten-year-old daughter, Jenny, who was the child in the original tale ...
Czech Phonology - Morphophonology - Vowel Alternations
... occur in word roots during inflections and derivations, and they also affect prefixes in derivations ... alternations occur in word roots during derivations (rarely also during inflections)
Racism In Argentina - Racial Terms - Negro Y negra - Derivations
... The rock group Babasónicos recorded an album entitled Groncho in 2000 ... "Negrada" is a term used with regularity in Argentina and Uruguay and one of its meanings is identical to gronchada ...
Sequent Calculus - The System LK - Example Derivations
... Here is the derivation of "", known as the Law of excluded middle (tertium non datur in Latin) Next is the proof of a simple fact involving quantifiers ... It is straightforward to find the derivation, which exemplifies the usefulness of LK in automated proving These derivations also emphasize the strictly formal structure of the sequent calculus ... This corresponds to shifting commutativity of assumptions and derivations outside the sequent calculus, whereas LK embeds it within the system itself ...
Minimum Mean Square Error - Linear MMSE Estimator - Derivations
... Thus the full expression for the linear MMSE estimator is Since the estimate is itself a random variable with, we can also obtain its auto-covariance as Putting the expression for and, we get Lastly, the covariance of MMSE estimation error will then be given by The first term in the third line is zero due to the orthogonality principle ... Since, we can re-write in terms of covariance matrices as This we can recognize to be the same as Thus the minimum mean square error achievable by such a linear estimator is ...