Lobachevsky is a famous Russian mathematician. He is called Copernicus in geometry. Because one of his most famous theories was treated unfairly, no one believed that his theory was correct. However, with the continuous development of science and technology, his theory was later proved to be correct by experiments, so people believed that Geba Lobachevsky's conclusion was correct more than ten years ago. Therefore, we discovered the other side of the real world. It can be said that its contribution is very great, especially in the field of mathematics, because in the past we only believed that mathematics had one appearance, and his discovery made us know that mathematics had another appearance.

The theory discovered by Lobachevsky is simply that two parallel lines can finally intersect, but what we learned from junior high school is that the two parallel lines are always parallel, and there is not much difference somewhere. However, Lobachevsky stumbled upon it in his own research, and this conclusion may be wrong.

Later, he continued to study this situation. After numerous failures, he finally found two parallel lines. If they continue to be parallel, they may intersect. When he told this conclusion to the whole world, it attracted cynicism from others. Because others didn't believe his conclusion, Lobachevsky was unhappy until his death, because no one believed his theory was correct and everyone thought he was a madman.

But facts speak louder than words. After more than ten years, an Italian mathematician finally made a series of experiments with his practical actions, which proved that Lobachevsky's conclusion was correct. Later, people called this conclusion non-Euclidean geometry to commemorate Lobachevsky's great contribution.