Positive definite
Zhèngdìng is a modern idiom, which means to modify and correct. It comes from Zhang Chunzhuan. Zhang Chunchuan: "When there are many old scriptures, we should pay attention to cleanliness every time we have doubts, and be positive about suburban temples, wedding crowns and funeral etiquette." "The Biography of Cai Yong in the Later Han Dynasty": "Play Zhengding Six Classics."
Song Dynasty's "Epitaph of Zhong, the former secretary of the literary works": "The book of cock crow is unforgettable every minute of the night. For thousands of years, everything has been done, and Zhang Wei's masterpieces all want to be refined, and everything is different. "
Knowledge expansion:
In these two schemes, the local positive definite operator value measurement (POVM) of quantum state sender plays a key role, and the mathematical expression of this measurement operator is given. The kingly way held high by sages and gentlemen, in a word, is the way of rites, music and punishment. These are the eight holy ways: right view, right meaning, right language, right career, right destiny, right diligence, right mindfulness and positive determination.
The concept of super-positive stability is put forward, and the relationships among real symmetric positive definite, sub-positive definite, good generalized positive definite, generalized positive definite, super-positive stability and positive stability matrix are discussed, and some definite results are obtained. Zhengding Zhao Gao, also known as Zhongban, originated before the Republic of China and has a history of 100 years. A domain decomposition method for solving positive definite quadratic programming is given.
Putting the right words in the right place is the real definition of style. Correct the axis, levelness and elevation of the positioning template, weld and fix it on the bracket, and weld a sufficient number of supports and tie rods. Several equivalent conditions of complex semi-positive definite matrix are given by using the equivalent conditions of real symmetric matrix semi-positive definite.
Semi-positive definite matrices are positive definite if and only if they are nonsingular matrices. The generalized spectral decomposition formula of real matrix is given, and some properties of characteristic roots of generalized positive definite real matrix are discussed. A new video surveillance camera self-calibration algorithm is proposed, which uses semi-positive definite programming to restore the focal length and principal point of the camera.