I am devoted to scientific research, but you want to trick me into having a love relationship?

Chapter 475 Shopping
Rio de Janeiro, Brazil.

After Xu Qingzhou and Song Yao finished their breakfast in the hotel restaurant, they went straight to the convention and exhibition center.

His first invited lecture started at 9 a.m.

Topic: Patterns of prime numbers.

Different from previous reports on a specific conjecture, this one was a summary. Xu Qingzhou shared the core contents from Cramer's conjecture to Riemann's conjecture and made corresponding connections.

For example, the application of sieve method, the coupling of various mathematical models, and the possible connections between conjectures.

At the entrance of the convention center, the two separated.

Song Yao is also busy with things.

As mentioned earlier, the conference has 21 subject areas, including algebra, number theory, geometry, topology, applied mathematics, etc. Each area is an independent group. After that, each group will arrange 10-12 special reports.

Mathematics is the foundation of all disciplines, involving physics, biology, chemistry, etc., and of course economics is included. Today, the theme of one of the sub-venues is mathematical finance and game theory.

Specifically, it is the optimal transmission theory in mathematical finance, which is widely used in resource allocation models and market design in economics.

The speaker is the famous mathematician Alessio Figali.

Next is the group report on "Stochastic Analysis and Financial Mathematics", which is basically a discussion among several scholars on the mathematical theory of financial risk measurement.

The first four days passed in a busy manner, and in the blink of an eye it was August 8th.

The topic of the morning report was birational geometry and the minimal model program.

The speaker was Kochhar Birkar, an Iranian-born mathematician from the UK and then a professor at Cambridge University.

A popular candidate for the Fields Medal. If it weren't for Xu Qingzhou, this genius mathematician's name would most likely be on the Fields Medal list.

The other party solved the boundedness problem of Fano varieties and provided a unified framework for the classification of high-dimensional algebraic varieties. He mainly shared his research on the application of birational geometry in complex geometry and string theory.

Xu Qingzhou came out earlier than Song Yao and waited at the door of the branch venue, opening his notebook to read the notes of the past four days of communication.

He waited for about 10 minutes, and then a familiar faint fragrance wafted into his nose.

Xu Qingzhou raised his eyes and it was indeed Song Yao.

Except for the first day when she attended the conference in a formal attire, Song Yao dressed relatively casually for the other reports at the branch venues. She wore a casual suit jacket over a T-shirt and paired it with jeans, which was simple and natural.

Xu Qingzhou put away his notebook and stood up. "Let's go back and change clothes."

"Why did you come out so soon?"

Song Yao took Xu Qingzhou's hand and said that she was going to the main venue to find Xu Qingzhou.

"Just a little early." Xu Qingzhou stopped, with a strange expression, "Did you find the content of the chat a little strange?"

Song Yao was stunned for a moment, but quickly reacted and hit Xu Qingzhou on the waist with a stern face.

"No, you were the one driving, why did you pinch me?"

"You have dirty thoughts!"

"If you are not dirty, how can you understand what I am saying? Okay, okay, I was wrong."

The invited report in the afternoon was about algebra and geometry, which talked about the new correspondence between modular forms and elliptic curves. The rest were some public lectures and some roundtable forums, with the theme of women's role in mathematics.

Compared with these, Xu Qingzhou felt that it was more important to accompany Song Yao on her birthday. Besides, he had been tired for four consecutive days and it was just right to relax.

The two planned to have lunch first, then go shopping in the mall, and have a good meal at a restaurant called "Otk" in the evening, and finally go back to the hotel to eat cake and spend time alone.

11:.

The two young men have arrived at the Botafogo neighborhood, which was once a gathering place for coffee trade aristocrats in the 19th century. It retains a large number of neoclassical buildings. Now it has been transformed into a modern community that integrates commerce and art. It is considered a multicultural landmark in Rio.

August is summer in the northern hemisphere, but winter in Rio. However, Rio's winter is different from Kyoto or Boston, with an average temperature of 8℃ in August. The rain just stopped, and the temperature dropped sharply compared to yesterday, with a hint of chill in the air.

Fortunately, they both stuffed thick clothes in the suitcase.

"Left hand in front."

Xu Qingzhou looked at the navigation on his phone and took Song Yao's hand to cross the road.

"Aren't these people cold?"

Song Yao glanced at the two girls in miniskirts in the distance. In such cold weather, they showed off their legs.
She was too cold even with her long pants on.

"Foreigners' perception of seasons is a mystery." Xu Qingzhou has spent more time abroad and has long been accustomed to it.

In the past, when I went out on a snowy day, I would always see people wearing flip-flops and summer clothes.

He suddenly thought of something, and holding Song Yao's hand, he asked, "Do you want to buy a pair of bare legs?"

"The weather forecast shows that the sun will come out tomorrow." Song Yao said expressionlessly.

"You can save it for later."

"No." Song Yao snorted. She understood what this guy was thinking. He was a leg control freak. Oh, no, this guy also liked hands. So, he was just an old pervert.

"Fine."

Xu Qingzhou nodded, paused, and said, "Silk stockings can also keep you warm. Do you want to buy two pairs?"

"."

Song Yao's Qilin arm could no longer hold her back.

You deserve a beating. You have more than a dozen at home and they are not enough to tear apart. Do you still want to buy some and cook them to eat?

The two crossed the intersection and followed the navigation instructions to the restaurant.

Under Song Yao's threat, Xu Qingzhou chose to shut up.

On this side, Song Yao held Xu Qingzhou's hand, took a deep breath, and really liked the feeling of a leisurely walk with someone else.

Although Xu Qingzhou was a bit naughty and always made her angry, his hands were very warm. The two of them walked hand in hand on the road. She just followed him without having to think about anything, and there was an indescribable peace in her heart.

At one o'clock in the afternoon, the two finished their lunch and prepared to go to the Comuna Creative Market in the neighborhood.

Before she arrived, Song Yao's cell phone rang. It was Zhang Junli calling to wish her daughter a happy birthday.

"We are going to the market. We will be careful."

Song Yao replied.

In order to host this mathematics conference, Rio has undergone rectification or severe crackdown, and security measures have been greatly improved, especially for a tourist destination like this, so the problem will not be serious.

The main street is generally safe during the day, but there are some precautions, such as avoiding going deep into the slum area on the northern hillside.

The weather was still a little overcast, the trees were moist, and crystal drops of water gathered on the leaves, sliding down the tree path. The leaves also moved due to inertia. There were many tourists around, and it was quite lively.

The oncoming wind hit my face and it felt a little stinging.

Xu Qingzhou stopped and helped the school beauty Song who was on the phone to straighten her collar.

Song Yao raised her chin to make it easier for Xu Qingzhou to zip her up, while continuing to talk to Zhang Junli: "He and I both brought thick clothes."

On this side, after the green light, Xu Qingzhou took the soft little hand again.

After strolling around the market, the two went into a nearby commercial center.

(End of this chapter)