15-17th century, thinking that the essence of science is mathematics; 17-19th century, mathematics was considered as a scientific tool; /kloc-After the 0/9th century, mathematics became a branch independent of natural science. People think about the relationship between mathematics and science, and science is becoming more and more mathematical. Mathematically design a theoretical model, and then establish an isomorphic relationship between the theoretical model and scientific facts to promote scientific development.

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