[Nitramp]

Here is a good example: a Japanese mathematician claims he proved the abc conjecture, with an enormous, complex, and totally novel approach. After it was ignored for a long time due to this, it took other mathematicians months of efforts to go through it. And they finally found that not only was the proof incorrect, at least some also think the approach is fundamentally misguided.

https://www.math.columbia.edu/~woit/wordpress/?p=11723