1. BC 1 1 century, Shang Gao, a mathematician in the Zhou Dynasty, put forward "Gousan, Gu Si and Xian Wu".
2. In the 3rd century A.D., Zhao Shuang in the Three Kingdoms period made detailed comments on the Pythagorean Theorem in Zhou Bian Shu Jing, and later Liu Hui also proved the Pythagorean Theorem in Liu Hui Notes.
Hua Hua, a mathematician in China in the late Qing Dynasty, put forward more than twenty proofs of Pythagorean theorem.
Second, abroad:
1, ancient Babylonians knew and applied Pythagorean theorem as early as around 3000 BC, and they also knew many Pythagorean arrays.
2. In the 6th century BC, the Greek mathematician Pythagoras proved the Pythagorean theorem, so westerners used to call this theorem Pythagorean theorem.
3. In the 4th century BC, the Greek mathematician Euclid gave a proof in the Elements of Geometry (Volume I, Proposition 47).
4. 1 April, 8761day, Garfield published his proof of Pythagorean theorem in the New England Journal of Education.
5. The Pythagorean proposition was published in 1940, and 367 different proofs were collected.
Extended data:
1, the proof of Pythagorean theorem is the beginning of demonstrating geometry;
2. Pythagorean theorem is the first theorem in history that connects numbers with shapes, that is, the first theorem that connects geometry with algebra;
3. Pythagorean theorem led to the discovery of irrational numbers and the first mathematical crisis, which greatly deepened people's understanding of logarithms;
4. Pythagorean theorem is the first indefinite equation in history to give a complete solution, which leads to Fermat's last theorem;
5. Pythagorean theorem is the basic theorem of Euclidean geometry and has great practical value. This theorem is not only a dazzling pearl in geometry, but also widely used in advanced mathematics and other scientific fields. 1971May 15, Nicaragua issued a set of stamps entitled "Ten Mathematical Formulas for Changing the World". These ten mathematical formulas are all selected by famous mathematicians, and Pythagorean theorem is the first one.
References:
Baidu encyclopedia-Pythagorean theorem