The Cholesky decomposition of a Hermitian positive-definite matrix A is a decomposition of the form. where L is a lower triangular matrix with real and positive diagonal entries, and L * denotes the conjugate transpose of L.hen A has real entries, L has real entries as well and the factorization may be written A = LLT. The Cholesky decomposition is unique when A is positive definite; there is only one lower triangular matrix L with strictly positive diagonal entries such that A = LL *.
A chagoma is an inflammatory nodule at the bite site of the reduviid bug which transmits Chagas disease, not to be confused with Romana's sign which is periorbital soft tissue and lymphoid swelling which occurs when the T. cruzi protozoan that causes Chagas disease enters through the conjunctiva.
Chapa. In spanish/Dominican terms this word means big ass. Chapa is known more as a slang word, also recognized in the song Mena tu Chapa translated in to English-  shake that Chapa/ass. This song has gone viral for Spanish viewers. Menea tu Chapa belongs to the Dominican artist known as Wilo d nuevo/new.