"Yes, sir!" Wu Tong was not sure about the identity of the person opposite him, so he chose to use the honorific "sir".
She was a graduate student, but intuitively, she didn't seem like a student! She was a professor at Kyoto University, but she seemed a little too young! However, youth isn't the only criterion for determining ability. Her research direction could be discerned from a few sloppy formulas. She had a strong mathematical foundation, arguably the best she'd ever encountered.
Lu Xiao pondered for a moment and gently pushed his glasses up on his nose.
"Perhaps there's a way beyond the sieve method. Hibbert's method of proving the infinity of prime numbers is topological. Perhaps you could try that approach?"
Lu Xiao raised his hand, took a book from the top of the bookshelf and handed it to Wu Tong. "This is Zellberg's supplementary research on sieve theory using the method of topology. I hope it can inspire you!"
Topology? Are there properties of geometric figures or spaces that remain unchanged after continuous changes of shape?
In an instant, the distance between the library's lamps, bookshelves, and the people opposite seemed to form a golden triangle ratio in the spatial composition. From the perspective, pure geometric images spun in Wu Tong's mind, and the soft light of the enlightenment stele spread out.
Ripples of thoughts splashed in Wu Tong's mind, as if a white dove of inspiration flew away. She seemed to have grasped a little bit of thread that could string the broken chain into a beautiful pearl necklace.
"Thank you, teacher!" Wu Tong borrowed the book to express his gratitude.
She was certain that this level of knowledge was simply beyond the reach of ordinary students. His gentle guidance lifted the fog that had just shrouded her eyes, revealing a glimmer of light.
Even if she guesses wrong, it doesn't matter. A wise man is her teacher. The fact that he can give her guidance is enough to prove that his knowledge is superior to hers. A wise man is her teacher, and the title of teacher is worthy of her!