Far away on the other side of the earth.

It was late at night on Princeton University campus, and only a few libraries with night study rooms were lit.

In the activity room of a library close to the apartment, Vera put a stack of papers on the table, opened a page in the paper, swept the thin index finger along a row of lines, and finally stopped in the middle, she said softly.

“…… On page 27, line 11, there is a problem with the formula here. "

Compared with three years ago, her stature has not changed much. The only difference is that her ponytail, which is always like the tail of a squirrel, has grown to the end of her arm, and has become a beautiful and convenient Greek style Princess braid.

If you wear a long dress with lace, you may be mistaken as a real princess. Unfortunately, it's just a common campus dress that covers her slender shoulders, which makes her always be mistaken as a high school student coming to the academic summer camp at a certain time

"Let me see Oh, my God, you are more strict than my doctoral supervisor. " Molina, with her black eyes in her eyes, rubbed her eyebrows, grabbed a pen from the table, stretched out and sat up straight.

This feeling of staying up late to explode the liver is not good, it is a burden for both shoulders and lumbar spine. Although she was early in school, she was not young enough to get her Ph.D. and become a lecturer at Princeton University.

At least, compared with the girl standing next to her.

Praised by partners, Vera smiled shyly and said shyly.

"No, I'm still far behind Ms. Sophie Morrel."

When Morina was still a doctor, Sophie Morrel was her tutor. The two had worked together for a long time on the critical line of Riemann's conjecture. But after the failure of Sophie Morrel's 18 year Nobel prize competition, Sophie gave up Riemann's conjecture, which was hard to chew, and turned to other research topics. Now, they are doing well 。

Molina, however, is still working hard on this subject, even though she has changed from a doctoral student to a lecturer at Princeton University, this has not changed at all.

It's a long story as to why she and Vera came together.

All in all, now they are in the same research group, striving for the same goal - the Riemann conjecture.

"No, you are too modest. That coward can't complete the beautiful proof of Jiaogu theorem, and can't find such a tricky problem carefully... " Maurina, who was biting the pen cover and staring at the formula repeatedly, grabbed her hair and said in a fretful way, "Damn, o'drizko's zero point calculation, I should have thought of it earlier."

"Bingo, o'drizko's zero point calculation method," Willa said softly, wrote two lines of calculation formula on the paper with a ball pen, and corrected the error, "the modified algorithm can be introduced, 40% of the non ordinary zero points are on the critical line Congratulations, Ms. Molina. You've found a way out of the Levinson algorithm to prove conrey's critical line theorem again. "

In the last half of the sentence, she said it with comfort.

Although, she is not sure whether this can be called comfort.

It took a month to come up with the idea, and another two months to try it out. The final result is the conclusion that was reached in 1990.

The critical line dividing the nontrivial zeros of ζ function is still standing on the annoying figure of 40%. If anyone can push it forward a little bit, he or she will have the hope to win the next or next fields award.

However, after so many years, only its challenger has fallen, and no one has forced the Dragon back a step.

"But it doesn't make sense," Murina sighed. "Maybe The chronicle of mathematics will consider accepting our papers. "

Vera gave her a look of encouragement and said softly.

"I think they should think about it. At least we found another way of using o'drizko's zero point method."

Different from other subjects, mathematical research is not completely result oriented. Sometimes, although there is no beautiful answer, if the process is excellent enough, or interesting enough, it can also be the reason for publishing. In particular, "the chronicle of mathematics", although not in Princeton, but for Princeton output papers are still relatively "loose".

Just

It's difficult for the top four journals like the mathematics annual.

"Maybe..." "Maybe we should change our thinking. I studied Sir Atia's notes a while ago and found his research very interesting."

Vera opened her mouth.

"Molina..."

"What's the matter?" said maurina, who had a black eye

Vera said seriously, "you really should have a rest."Although it may be a little disrespectful to the late Sir Atia, many people had thought of it before his death, and finally came back.

"Don't worry about me, I'm fine..." Molina reached out and touched her forehead. "Maybe you're right. It's time for me to have a rest."

She thought she must be crazy to start studying Sir Atia's thesis.

Willa opened her mouth slightly, and finally sat beside her, silent for a while, and asked.

"Why are you What about sticking to Riemann's conjecture? "

Hearing this question, Molina quipped in a rhetorical tone: "just like why do you cling to that man?"

Vera blushed a little, hesitated for a moment, and stared at the paper on the table.

"I Not as persistent as you said, but he gave me light when I was most helpless. "

Molina: but that was many years ago, wasn't it

Vera was silent for a moment and nodded.

Indeed, she knew it was many years ago.

She wasn't even sure if she remembered what she looked like.

Although she always remembered what he looked like

"So do I," continued Molina, with a smile and a spray of her index finger on the empty mug that lay down on the table. "Math gave me the same thing."

Vera looked at her puzzled.

"But why the Riemann conjecture?"

"Let's talk about it again."

As she spoke, Molina rose from her chair, but because she was too tired, she staggered to one side. Fortunately, Vera immediately got up and held her up, so that she did not trip.

"Thank you," she said, bending her mouth as she stood on the back of the chair in her right hand. "If he doesn't want you, marry me."

Vera blushed and said, "I'm sorry I'm not that one. "

Molina smiled.

"I'm just kidding. Don't take it seriously."

With that, she blinked, picked up the paper on the table, held it in her chest, and walked away quickly.