1+1=？

This question was written on the blackboard by Junxin for two seconds before the class, and then Junxin put down the chalk and stood on the podium silently looking at the students below.

Present in the audience are sophomore students in the Department of Mathematics of Mizuki University, who are also students of Junxin's class. At the same time, they are also students after the first resumption of the reconstruction of the Department of Mathematics at Mizuki University.

The students in the audience seemed to have known that the teacher of this class was Junxin, so they didn't feel wrong with a young person standing on the podium. Indeed, for any peer, if he achieves a little more than you, he may be a little unconvinced of you, etc., but if he achieves far more than you, or even if you can't catch up, then you can no longer be jealous of him, and some only have deep admiration.

And Junxin is obviously an example. Before the age of eighteen, Model's conjecture was proved and accepted by the world, and before the age of nineteen, he published an article in Nature that might open up a new branch of science, and perhaps any of them could be something that some of them could not do in their life's pursuit.

They are very curious about Junxin's achievements, perhaps because of their professional relationship, they have read all the papers published by Junxin, some of which they can understand, and some of which they seem to be reading from heaven. The former is like Junxin's "Three-Dimensional Extrapolation Proof of Penrose's Two-Dimensional Structure" published in China, and the latter is like Junxin's "On the Proof of Modell's Conjecture".

Because of curiosity, he paid great attention to Junxin's every move, and when Junxin walked into the classroom, the classroom was already silent. And when Junxin started writing on the blackboard, they even took out their class notebooks and prepared to record what Junxin was going to write in the notebook. However, when Junxin wrote down this equation, this group of people who claimed to have the highest IQ in Mizuki University were a little anxious, and they were all dumbfounded...

Fifty-nine seconds later, the class bell rang, and when the bell rang for ten seconds, the bell stopped, and Kiminobu began his first lecture at Mizuki University.

"Hello everyone, in today's lesson, we will start learning algebraic geometry. I don't have any interest in self-introduction and roll call, if you like it, stay. If you don't like it, I won't force it. ”

"In my class, you can speak at any time, but please raise your hand first, there are no rules and regulations, and the only assignment is that at the beginning of each month you will have a difficult problem that is beyond your ability, but can be solved through literature and calculations."

"Alright, that's the end of the small talk. Today's lesson starts with this calculation. How much is one plus one, can someone answer my question? Junxin asked.

Jun Xin glanced at the more than 30 people in the audience, but saw that they were all staring and pondering, as if the topic they were facing was the proof of Goldbach's conjecture of 1+1.

Jun Xin was a little disappointed, but there was no other emotion, this incident happened even in the future generations.

It is said that a great mathematician was invited to give a lecture at a certain university, and he wrote this question on the blackboard like a gentleman, and asked this question to the 1,000 listeners who were known as the elite of the university at that time.

In the end, none of the 1,000 listeners, who claimed to be the elite of the school, rushed to say the answer that everyone knew. They generally believe that as a great mathematician, it is impossible to ask such a simple question, so there must be a mystery hidden in the question, and the answer cannot be as simple as they imagined.

The end of the story is broken by the innocent answer of a young girl of seven or eight years old, breaking the strange atmosphere. The answer is, of course, two, and mathematically, it can only be two.

Let's turn our attention back to Junxin.

"Didn't anyone answer?" Junxin asked again. There was still silence off the field.

"Well, since everyone doesn't answer, then I'll just announce the answer." Junxin shook his head, ignored the students in the audience, picked up the chalk in his hand, erased the question mark, and wrote a big, eye-catching "2". "That's the answer."

There was an uproar in the audience, almost no one believed that Junxin would be on the podium of the university, facing the top college students who have mastered calculus, linear algebra, number theory, etc., teaching such an addition operation, what does this want to do?

"Don't you think the equation holds?" Junxin doesn't have to guess to know what these people are thinking.

Hearing Junxin's rhetorical question, they were all speechless. No one dares to say that this equation is not true, because they have been learning mathematics since childhood, and the first operation they are taught is this equation, how can it be said that it is not true? If that's the case, wouldn't the math they've been studying for so many years be true?

Junxin waited for a while, and waited until the sound of discussion in the classroom was over, before he spoke: "Well, I can probably guess a little bit of your thoughts, it's nothing more than that a mathematician like me won't be bored to come up with such a simple problem for you, and there must be other intentions in it, so you automatically and actively ignore the correct answer to the question itself, right?" ”

didn't wait for them to have anything, but he saw that Junxin had already raised his first finger: "The first lesson: mathematics, always pay attention to the problem of mathematics itself, and the ontology of research will not be people's ideas." So, please ignore my thoughts on this problem, you need to focus on the correct solution of the problem itself. ”

After Jun Xin finished speaking, he paused slightly, and he glanced at the students in the audience, who all seemed thoughtful. Junxin couldn't help but feel a trace of satisfaction in his heart. Because it shows that some people have listened to his words, and if they continue to listen, there will always be people who will start to think about the problem on their own initiative, instead of thinking about other things that are not related to research, so that there will be a greater chance of being able to think independently.

"The second lesson..."Jun Xin looked at it for a while, and when most people had come to their senses, Jun Xin raised a second finger, "There is no need to complicate simple problems, and you don't want to say that the calculation here is a binary algorithm, people, not computers." ”

In binary algorithms, 1+1 is indeed not equal to 2, but equal to 10. However, in the world of mathematics, the conventional five operations, such as addition, subtraction, multiplication, division, etc., are calculated using the decimal method of operation without explanation. Only computers use binary for "not" problem judgments. In Junxin's eyes, research problems don't need to be so complicated (of course, mathematical problems are generally more complicated), don't think too much.

"But we're not in philosophy class, and I'm not interested in teaching you these things, so let's get into our main topic, and everything in our class starts with this equation..."