[1] One party passes

(Forbidden World, Tuesday, April 30, 2013, Night; School City, School District 14, Dormitory)

"Convergence of function spaces: If an infinite set of functions and n-dimensional vectors is considered, the similarity between the two will no longer exist. From the elementary theorem of mathematical analysis, we can know that from an infinite vector set {v} bounded by the absolute value |v|or the norm v^2=Nv, a convergent sequence can be selected from the absolute value |v|or the norm v^2=Nv as bounded......"

Let S be the set of points on the number line, and ξ be a certain point. If there are infinitely many points in S in any ε neighborhood of ξ, ξ is said to be a cluster of points in the point set S. For an equally continuous set of functions, the clustering theorem holds: a sequence q1(x), q2(x) can be selected from any set of functions that are uniformly bounded and equally continuous in the fundamental region G...... The sequence consistently converges to a continuous limit function within G. This condition is ...... for the Adora theorem of the set of continuous functions"

Fang Tong sat quietly at his desk with noise-blocking headphones, and the tilted data terminal projected mathematical and physical methods into his line of sight. After studying one chapter and doing a few simple exercises at the end of the textbook, he deduced the abstract mathematical knowledge in his mind several times, and felt that he had already understood it by heart.

The high-intensity mental activity made him feel a little tired. He took off his headphones and stood up to stretch. Yun Chengyu, who had just taken a shower next to him, was facing the computer, using a self-proclaimed "faith"-level void mask to roam the Radiant camp - this game called DoTA2 is a multiplayer online combat competitive game that was just open beta earlier this month, and I heard that the other party said that its predecessor was the DoTA map in Warcraft 3.

"Two teams, each with five players, a good lane and a weak lane, the goal of the game is to destroy the ancient ruins in the opposite fortress...... It doesn't seem to be the kind of real-time strategy that can be easily calculated. ”

"Hah, do you want to try it?"

"Yes, tell me how to do it. ”

The speed at which he got started was quite amazing, and even Yun Chengyu, a player with more than 5,000 points on the ladder, was amazed, but in the end, he still won two PVPs by lying down. However, after getting acquainted with the mechanics of forward and negative denial, damage calculations, forward and backward swing, and attack timers, he is confident that he will be able to reach his opponent's level in a short period of time - except for the reaction speed at certain moments.

"You're too good at [time shifting], aren't you? It doesn't seem like cheating when it comes to yourself......

After the game, seeing that it was time to go to bed, one party lay down on the bed, pulled the quilt, and closed their eyes. Just as he was about to relax his thoughts, a seemingly inconspicuous message came to mind as the nerve signals fluctuated.

"Misaka-san's birthday seems to be May 2nd...... Isn't that the day after tomorrow?"

"Should I prepare a gift?"

……

(Forbidden World, May 1, 2013, Wednesday, afternoon; School City, Ruiyun Elementary School)

After the school's course, Ichibantong and Mikoto Misaka went to the physics department together to prepare for the robot competition in three months' time. He is responsible for the modeling part of robotics engineering and design because of his mathematical skills, while he uses his skills to directly manipulate and inspect electronic devices.

Although the strength of the ability is still at the level of Level 3, has the computing power begun to break through? The recent fine operation is far beyond the level of last week, and the level of improvement is probably a matter of a few days to ten days.

"Misaka-san, a classmate. ”

"Tachi-san, I'm here so early!"

One party said hello briefly, then sat down in front of the computer in the activity room. The programming languages and development platforms commonly used in the school city are different from the outside world,For a large number of matrix operations involved in the robot control algorithm, there is tailor-made software,So the real difficulty of this job is not programming-he found that it is not enough to just be able to program,Mechanical、Electrical、Control and other disciplines have to involve some,And mathematics as a tool discipline will never be too much。

"Well, it's all these things you don't understand at all, what kind of monster are you!"

"So fast, your test is done?" Yi Tong looked helplessly at the girl with short brown hair and eyes coming over next to her, "Well, I just think these are interesting." By the way, tomorrow is your birthday, right?"

"Hmm. Any questions?"

"Do you have any plans?"

"Isn't it?...... I don't think so, I don't have to go to a research institute tomorrow, I was thinking of reading manga alone. Mikoto Misaka shook her head lightly indifferently, "Do you want to ask me out for any activities? ”

Not hearing the expected answer, Fang Tong couldn't help but reach out and press his somewhat swollen temples, and simply stopped the work at hand for the time being.

"Isn't it common to celebrate birthdays?"

Thinking back to the common sense he had observed and learned since leaving the [Institute of Special Abilities], he asked tentatively with some curiosity. Because he was an adopted orphan, he didn't know what his birthday was, so he didn't have this experience.

"Birthday party...... Well, I remember celebrating when I was with my mom and dad. The girl sat on the desk with her hands propped up, and her expression was slightly distracted, as if she was recalling something, and then she became relaxed again, "But this kind of thing can be anything." Besides, other students may have their own business, so they will not be motivated to think about it. ”

Does it not matter if you feel like a birthday? No, it's more than that. If you think about it carefully, although this guy and the people around him can greet each other with a smile, and there is no discordant intrigue between some girls, it seems that there are almost no other friends, and the classmates in the department are only nodding friends...... But what do I think I'm doing here?

"Hey, are you thinking about the big questions of the truth? That's pretty rude!"

"Ah...... Sorry, sorry. ”

Fang Tongtong looked embarrassed, hesitated for a moment before saying:

"Speaking of which, Misaka-san's ...... Personality, I feel a little withdrawn. Ah, that, I don't mean ......"

After listening to his explanation, the other party lowered his head and thought for a while, and then jumped off the table.

"Withdrawn...... Probably. I've fantasized about walking down the street in groups of three or two, but I always feel like there's nothing to talk about with them...... It's not that I hate it.,It's just that it feels bland.,Most of the girls in the class don't seem to be interested in brain-burning ACG.。 ”

Mikoto Misaka said this, and suddenly looked at him with a smile.

"But if you're a friend, isn't there one in front of me?"

Fang Tong was slightly stunned, and then smiled as well.

"So, are we going to celebrate together tomorrow?"

……

-----------

PS: Judging from the novel, Sister Cannon's personality was quite withdrawn for a long time, and it wasn't until later that the setting of the Super Cannon Foursome came out, so let's write it like this.