"Space-time is derived from the superposition of historical paths of a series of transitions between different nodes and connections in a dynamic spin network. You have learned Feynman diagrams, Hilbert space and differential manifolds, so we can also understand spin networks. This topology provides a descriptive language for spatial quantum geometry, and spin bubbles have the same role in the quantum geometry of space-time. Spin networks are one-dimensional diagrams with labels at vertices and edges. Space-time can be regarded as the superposition of spin bubbles, which is the generalization of Feynman diagrams. The boundary of spin bubbles is a spin network. Just like in manifold theory, the boundary of n-manifold is (n-1)-manifold."

For ordinary people, Professor Selveig's lectures are like devil whispers. Even undergraduates at Royal Holloway College in London are difficult to fully understand all the courses when listening to his lectures, because he always extends the lecture content too much, which makes many undergraduates who come here a lot of trouble. For example, this time, he just mentioned how to understand space and space, and then he was uncontrollable to quantum geometry, and then extended to generalized covariance and background independence. The blackboard was soon filled with writing, and Professor Selveig brought a whiteboard to write down the ADM representation. Salomon gently patted the hand of the undergraduate student who was almost broken, and the female student leaned on his shoulder.

"Get out of here, Bitch!" Daisy stretched out her hand and pushed the female student aside, snatched her position, and then leaned on Salomon's shoulder. Since Jane Foster won the Nobel Prize, intern Daisy has also become arrogant. This arrogantness is limited to snatching food from Salomon's plate when she went to Egham town to eat together, and everyone regards this naive behavior as Daisy's new joke.

“Is Professor Selvig always like this?”

"Or it wouldn't be so few people who listened to this course. Do you think I could understand?" Daisy pursed her lips. Since Professor Selvege had been linked to the two alien invasions of the Battle of New York and the Battle of London, no matter how hard the crazy old man gave a lecture, the school did not intend to interfere with his teaching arrangements. For Salomon, what Professor Selvege said was not too difficult. He had learned everything he should have learned, and he did not think he was wasting time. Professor Selvege's brain was very likely inspired by the space gem, otherwise he could not explain why he could still make such valuable research after becoming a sage of the folk Druids. No one knew when Professor Selvege would have a shocking but equally correct view.

"You are a graduate student, Daisy!"

“I am a graduate student in social sciences, not a graduate student in astrophysics.”

"I'm not here to listen to the class either. Although Jane often throws us over when she's busy, I have something else to do today." Salomon blinked, and mysteriously lowered his head to Daisy, "You understand what I mean. It's... my main profession."

Daisy thought for a few seconds, and her expression suddenly became horrifying.

"Vampire, or werewolf?" She couldn't help but lower her voice, while looking around the stairs classroom tremblingly. "Is it in this classroom?" She sniffed and tried to lower her voice until only the hissing of air flow passing through her throat was left. Salomon could clearly feel Darcy's body trembling because she was almost tightening Salomon's position. "Is it that undergraduate? Oh my god, I pushed her just now! Is she looking at me now?"

"Uh..." Salomon smiled awkwardly at the undergraduate student, "I think she just wants to settle the score with you when the get out of class is over. It's not a vampire, nor a werewolf, but..."

"That painting!" Darcy let go of her hands holding Salomon's neck. She widened her eyes and seemed even more scared.

The painting she mentioned is an oil painting drawn in 1864, creator Sir Edwin Henry Lancier. The painting was hung on the wall of the examination center, and two polar bears that bit the flesh of the crew were inspired by the disappearance of the British Arctic Expedition in 1845. However, the horror picture cannot be called Daisy's reason for it. The horror of the painting comes from a creepy rumor between the 1920s, a student who was on the examination pierced a pencil into his eye at the examination site, and the student wrote "The polar bears made me do it" on the test paper before committing suicide. But if you want to trace the rumors that there are definite records, it should be a legend among students in the 1960s: Anyone who sits in front of the painting during the examination will fail.

From then on, when the school holds the exam, the painting will be covered with a large enough British flag.

"The cause of death of the last two survivors of the Franklin Expedition was similar cannibalism." Daisy became more and more afraid of the more she said it, but Salomon rolled her eyes wide. What a bad superstition! Although some magic has a lot to do with superstition, less than two hundred years have passed, and a painting that is disgusted by everyone at the same time cannot cause any big trouble. What's more, there are many ghost stories at Oxford University than Holloway College, such as the ghost of William Laud, the beheaded Archbishop of Canterbury in the library of St. John's College. There are vampires who are genuine and want to fall in love with humans at Oxford. Salomon killed them all on the first day of class at Oxford. What's the only ghosts and curses to be afraid of?

"I've long wanted to burn that painting! No? That's the cemetery of Queen Mary's College?"

This chapter is not finished yet, please click on the next page to continue reading the exciting content later! "No, do you think I am like a priest of exorcism? Although I am a professional exorcist, this does not mean that I will tell you all the details of exorcism." Facing Salomon's question, Daisy's eyes were full of confusion. "Do you know Professor Selvege's achievements in folklore? This is Professor Selvege's newly expanded academic field. Although in the face of serious physics, folklore looks like a castle made of sand, it does not prevent him from studying religious folklore through myths - especially when Thor has a good relationship with him, he has almost no opponents in this field."

"I... why don't I know about this!" Daisy's courage became stronger. She patted Salomon's arm with the ringtone. Salomon shrugged, his expression was very innocent. "Go quickly, otherwise that Bitch will come to cause trouble for me!" Daisy pulled the two-meter-high secret mage to try to hide in the crowd leaving. Obviously, she didn't know that this was useless, but instead made her and Salo more conspicuous. When they finally left the crowd and headed to the professor's office first, Daisy finally asked a question that had been suppressed for a long time (about five minutes).

"Then what are you doing with Professor Selvig?"
Chapter completed!