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ya yes its there a matrix called zero matrix
a squar matrix A is called involutary matrix. if A^2=I
A sparse matrix is a matrix in which most of the elements are zero.
A zero matrix is a matrix in which all of the entries are zero.
yes, it is true that the transpose of the transpose of a matrix is the original matrix
The bone of a fetus are composed mainly of cartilage.
cartillage
The matrix of connective tissue is composed of collagen, reticular, and elastic fibers embedded in ground substance (typically composed of water with stabilizing proteins). The fibers are made by fibroblasts and the most abundant in the body is collagen, while the least abundant is elastic.
Elastic connective tissues have fibers that are composed of the protein elastin. And provide rubbery resiliency to matrix.
Don Davis
Collagen Fibers
A Hadamard Matrix is a square matrix composed of 1 or -1. Using a square matrix system the hadamard matrix could be created
epiglottis
collagen
It is composed primarily of hyaluronic acid.
Collagen fibres, reticular fibres, and elastic fibres and protein fibres found in the cellular matrix.
The part of the matrix retains water is the connective tissue matrix. This is mostly composed of fibers and ground substances.