Matrix (mathematics)In mathematics, a matrix (plural matrices) is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and columns, which is used to represent a mathematical object or a property of such an object. For example, is a matrix with two rows and three columns. This is often referred to as a "two by three matrix", a " matrix", or a matrix of dimension . Without further specifications, matrices represent linear maps, and allow explicit computations in linear algebra.
Matrix multiplicationIn mathematics, particularly in linear algebra, matrix multiplication is a binary operation that produces a matrix from two matrices. For matrix multiplication, the number of columns in the first matrix must be equal to the number of rows in the second matrix. The resulting matrix, known as the matrix product, has the number of rows of the first and the number of columns of the second matrix. The product of matrices A and B is denoted as AB.
Rotation matrixIn linear algebra, a rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix rotates points in the xy plane counterclockwise through an angle θ about the origin of a two-dimensional Cartesian coordinate system. To perform the rotation on a plane point with standard coordinates v = (x, y), it should be written as a column vector, and multiplied by the matrix R: If x and y are the endpoint coordinates of a vector, where x is cosine and y is sine, then the above equations become the trigonometric summation angle formulae.
Education in SingaporeEducation in Singapore is managed by the Ministry of Education (MOE). It controls the development and administration of state schools receiving taxpayers' funding, but also has an advisory and supervisory role in respect of private schools. For both private and state schools, there are variations in the extent of autonomy in their curriculum, scope of taxpayers' aid and funding, tuition burden on the students, and admission policy.
Pinoy Big Brother: Kumunity Season 10Pinoy Big Brother: Kumunity Season 10, also known as Pinoy Big Brother Season 10, is the tenth main and sixteenth overall season of the Philippine reality television series, Pinoy Big Brother. The season, which premiered on October 16, 2021, was the second to partner with the social-media app Kumu; "Kumunity" is a portmanteau of "Kumu" and "community". The season revolves around three groups (known as "batches") of housemates, representing three Kumunities: celebrities, adults and teens.
Ken GoodmanKenneth Goodman (December 23, 1927 - March 12, 2020) was Professor Emeritus, Language Reading and Culture, at the University of Arizona. He is best known for developing the theory underlying the literacy philosophy of whole language. Goodman began teaching at Wayne State University in 1962. His research focused on reading in public schools. While at Wayne State University, Goodman developed miscue analysis, a process of assessing students' reading comprehension based on samples of oral reading.
1996 in musicThis is a list of notable events in music that took place in the year 1996. 1996 in British music 1996 in Norwegian music 1996 in South Korean music 1996 in classical music 1996 in country music 1996 in heavy metal music 1996 in hip hop music 1996 in Latin music 1996 in jazz January 8 – Robert Hoskins is found guilty and convicted on five charges of assault, stalking, and threatening to kill Madonna.
On-Line Encyclopedia of Integer SequencesThe On-Line Encyclopedia of Integer Sequences (OEIS) is an online database of integer sequences. It was created and maintained by Neil Sloane while researching at AT&T Labs. He transferred the intellectual property and hosting of the OEIS to the OEIS Foundation in 2009. Sloane is the chairman of the OEIS Foundation. OEIS records information on integer sequences of interest to both professional and amateur mathematicians, and is widely cited. , it contains over 360,000 sequences, making it the largest database of its kind.
Gi alpha subunitDISPLAYTITLE:Gi alpha subunit Gi protein alpha subunit is a family of heterotrimeric G protein alpha subunits. This family is also commonly called the Gi/o (Gi /Go ) family or Gi/o/z/t family to include closely related family members. G alpha subunits may be referred to as Gi alpha, Gαi, or Giα. There are four distinct subtypes of alpha subunits in the Gi/o/z/t alpha subunit family that define four families of heterotrimeric G proteins: Gi proteins: Gi1α, Gi2α, and Gi3α Go protein: Goα (in mouse there is alternative splicing to generate Go1α and Go2α) Gz protein: Gzα Transducins (Gt proteins): Gt1α, Gt2α, Gt3α Gi1α is encoded by the gene GNAI1.
