Chapter 271

Chen's theorem is a theorem about Goldbach's conjecture proposed by the famous Chinese mathematician Academician Chen.

This is what we know as "1+2".

To summarize the content of Chen's theorem in simple terms, it means that 'any sufficiently large even number can be expressed as the sum of the product of a prime number and a number of no more than two prime numbers'.

It's simple to understand.

But when Mr. Chen proved it at that time, he could write more than a dozen pages of papers.

Chen's theorem is unanimously recognized by the international mathematical community as a milestone in Goldbach's conjecture.

After all, the '1+2' is only one step away from the '1+1' that Goldbach conjectures.

Although Academician Chen did not prove Goldbach's conjecture thoroughly, Chen's theorem is still applied in various fields of mathematics.

The conjecture of equal difference prime, and Goldbach's conjecture are the same conjecture about prime numbers, and many mathematicians have thought of starting from Chen's theorem to overcome the conjecture of equal difference prime.

But undoubtedly, all of these people ended in failure.

At the same time, the experience of blood and tears proves that if you want to defeat the conjecture of equal difference primes, Chen's theorem is not a weapon to be used.

Therefore, when asked this question by Gu Lu, Konstantin's brows subconsciously furrowed.

Previous experience has proved that Chen's theorem is completely unworkable in the conjecture of equal difference primes.

Is this Gu Lu a novice in number theory, and would ask such a well-known question?

Konstantin's brow furrowed even tighter.

"Chen's theorem is not suitable for solving the conjecture of equal difference primes. Konstantin frowned, and answered Gu Lu's question in a light tone.

"Why?" Gu Lu continued.

"Countless previous experiences have proved that Chen's theorem is not suitable for conjecture of equal difference primes. Chen's theorem talks about the relationship between an even number and three prime numbers, which is difficult to correlate. However, it may be possible to guess Goldbach's conjecture, but unfortunately it has not yet been proven. Konstantin replied.

"Then Professor Constantine personally tried it?"

"Uh...... Not really. ”

"Then why don't you give it a try, perhaps, you will find a surprise?" Gu Lu smiled slightly.

"Hmph. Konstantin snorted coldly, "I don't have that leisure. ”

Gu Lu shrugged, "Then there is no way." ”

"You don't have any other questions, do you?" Constantine glanced at Gu Lu.

"It's gone. Gu Lu replied.

Konstantin raised his wrist and glanced at the time.

"It's almost time, and this is the end of this report, thank you for listening!"

Bang Bang Bang ~~

The applause continued.

Gu Lu looked at the back of Konstantin leaving, smiled helplessly, and then sat down.

Simon leaned over at this time, "Gu Lu, what exactly did you mean by that conversation with Constantine just now, Chen's theorem can really prove the conjecture of equal difference primes?"

"Don't say it, don't say it. Gu Lu smiled mysteriously.

Konstantin's departure meant that the one-hour presentation session of the International Congress of Mathematicians was officially over.

Starting tomorrow morning, there will be breakout sessions for each subject.

In total, there are twenty groupings.

In the field of number theory, there are analytic number theory and algebraic number theory, in the field of geometry there are differential geometry and algebraic geometry, and in topology, there are differential topology and algebraic topology......

Unpopular fields are grouped in one field.

In popular fields such as number theory and geometry, each field contains three or four groups.

Forty-five minutes of breakout session presentations, about two sessions a day.

Gu Lu was scheduled for the second game tomorrow.

And the invited speaker of tomorrow's first report, Gu Lu is very familiar with it, it is Simon next to him.

Of course, this ranking of the report order does not make any sense.

But Simon almost laughed out loud when he learned that he was ahead of Gu Lu.

............

Half past six in the evening.

Downstairs of the Yenching International Conference Center Hotel.

Simon, dressed in a simple casual suit, walked out of the lobby door with a blank face.

At the door, Gu Lu leaned on a white sports car and played with his mobile phone.

Seeing Simon come out, Gu Lu beckoned to Simon.

Simon walked in and looked at the sports car Gu Lu was leaning on.

The latest Lamborghini.

Are Huaguo's researchers so rich?

"Your car?" Simon asked.

"My friend's. Gu Lu opened the car door and said while letting Gu Lu sit in.

This car was borrowed by Gu Lu from Su Xi.

I remember that at that time, Gu Lu wanted to go to the 4S store to buy one casually, but when Su Xi learned the news, he didn't say a word, went to the garage to drive a car, threw the car key to Gu Lu, and let Gu Lu use it casually.

Gu Lu could only be disrespectful.

Gu Lu took Simon to a roast duck restaurant in the third ring road of Yanjing.

The name is Duck King Roast Duck Restaurant, and the taste is quite authentic.

Gu Lu ordered a table full of dishes.

One duck and three eats, mustard duck paws, four hearts of roasted liver, crystal duck tongue, mushroom duck wings, canned stewed beef head cake, salted duck liver, braised duck heart......

The table is full of ducks, which makes people feel appetizing at a glance.

Considering that Simon is a foreigner and may not like to be too greasy, the roast duck restaurant chosen by Gu Lu is a breakthrough in the century-old traditional practice of roast duck greasy and strong flavor, and has changed to a modern taste that is not fatty, not greasy, crispy on the outside and light on the inside, light and nutritious. The outer crisp is to roast the duck skin into a puffed shape, which is neither burnt nor dry.

It can bake the duck skin to a thickness of three or four millimeters, and the thick duck skin accounts for half of the plate of good duck, but it tastes sweet and crispy, and melts in the mouth. The inside is tender, the duck meat is very tender and delicious, thin but not woody, and there is no greasy feeling.

One bite down, the mouth is full of crispy.

Gu Lu ate happily, but Simon seemed a little lacking in interest.

"Don't like it?"

"Nope. It's delicious. Simon forced a smile.

"It's okay, I'll take you to taste our Huaguo special breakfast tomorrow morning. Gu Lu said with a smile on his face.

............

The next day, Simon was woken up in his sleep by a series of phone ringing.

Connected to the phone in a daze, it was Gu Lu's familiar voice.

"Come down and take you to breakfast. ”

"Well, now?" Simon glanced at the time, it was just after six.

"That's right, right now. ”

"Okay, wait for me a moment. ”

After Simon came down, Gu Lu drove Gu Lu to a roadside breakfast restaurant near Yanda.

The grandmother who bought breakfast recognized Gu Lu at a glance.

"Is this your friend Sa?" Grandma looked at Gu Lu.

"Well, a friend of mine from abroad. Gu Lu introduced, "Grandma, bring a bowl of tofu brain for the two of us, it needs to be salty." ”

"Also, bring us two more bowls of bean juice and two preserved eggs. ”

Breakfast was served quickly.

"What is this?" Simon asked, frowning, picking up the black, preserved eggs.

"Preserved eggs, our special food in China, are delicious. After speaking, Gu Lu picked up a preserved egg and swallowed it in one gulp.

Simon learned from Gu Lu's appearance, and also swallowed the whole preserved egg in one bite.

Then, the expression on his face instantly became exciting.