Ning Mo and Zhang Zhilei pricked up their ears and eavesdropped on the discussions of the veteran students in the back rows.
"The school's full of tricks. I'm going to stay home," Ning Mo complained. "Are the Rocket Class teachers really this sly? They picked several problems we have no chance of solving just to whet our appetites?"
"I almost fell for it. I could tell these four problems weren't anything good." Zhang Zhilei nodded, then poked Song He beside her with her elbow. "Old Song, go up there and solve them. I'll respect you as a real man!"
"I'll take a look." Song He stared at the problems on the whiteboard, lost in thought.
Zhang Zhilei could not hold back her laughter. "You're really going to study them? Didn't you hear the veterans talking behind us? These four problems are way beyond anything we can touch."
Song He did not hear her. A Comprehension Capsule appeared in his palm, and he quietly swallowed it.
Time was tight. He could only increase the dosage!
Onstage, Zhai Zhu pressed the Remote Control. A PPT Courseware presentation popped up on the big screen, and the lecture officially began.
The first slide showed the famous animation of a doughnut transforming into a coffee cup. In topology, a doughnut had one hole, and a coffee cup also had one hole, so the two could be transformed into each other.
"The structure on a topological space is called a spatial topology. Every topology is a collection of subsets of mathematical objects—in other words, the open sets of the space. You don't need to memorize this by rote. Just remember that the topology and its interior open sets can determine the structure of the space..."
Zhai Zhu began explaining in a steady stream.
The atmosphere in