"Space-time is derived from the superposition of a series of historical paths of transitions between different nodes and connections in the dynamic spin network. You have studied Feynman diagrams, Hilbert spaces and differential manifolds, so we also
Be able to understand spin networks. This topology provides a description language for the quantum geometry of space and spin bubbles play the same role in the quantum geometry of space-time. Spin networks are one-dimensional graphs with labels on vertices and edges. Space-time
It can be regarded as the superposition of spin bubbles, which is a generalization of the Feynman diagram. The boundary of the spin bubble is the spin network. As in manifold theory, the boundary of the n-manifold is the (n-1)-manifold.
.”
For ordinary people, Professor Selvig's lectures are nothing more than devil's whispers. Even those undergraduates at Royal Holloway, University of London, find it difficult to fully understand all the courses when listening to his lectures, because he always
Over-extension of the lecture content has caused great misfortune to many undergraduates who came here for the reputation. For example, this time, he only mentioned how to understand space and time, and then got out of control and connected it to quantum geometry, and then extended it to
Generalized covariance and background independence. The blackboard quickly filled up. Professor Selvig pulled another whiteboard and wrote the adm notation on it. Salomon gently patted the undergraduate next to him who was almost emotionally broken.
Taking advantage of his hand, the female student leaned on his shoulder.
"Go away, bitch!" Daisy stretched out her hand and pushed the female student aside, taking her position, and then leaned on Salomon's shoulder. Since Jane Foster won the Nobel Prize,
Intern Daisy also became arrogant. This arrogance was limited to snatching food from Salomon's plate when we went to Egham Town for dinner together. Everyone regarded this childish behavior as Daisy's new joke.
"Is Professor Selvig always like this?"
"Otherwise there wouldn't be so few people taking this course. Do you think I can understand it?" Daisy pursed her lips. She fought Professor Selvig's Battle of New York and the Battle of London twice.
After the connection with the alien invasion, no matter how out of tune the crazy old man's lectures were, the school did not intend to interfere with his teaching arrangements. For Salomon, what Professor Selvig taught was not too difficult.
He has already learned everything he needs to learn, and he also doesn't think he is wasting time - Professor Selvig's brain is most likely to have been inspired by the space gem, otherwise there is no way to explain why he is here
After Stonehenge became the great sage of folk Druidism, he could still produce such valuable research. No one knows when Professor Selvig will come up with a shocking but equally correct point of view.
"You are a graduate student, Daisy!"
"I am a graduate student in social sciences, not astrophysics."
"I'm not here to listen to the lecture. Although Jane often throws us here when she is busy, I have other things to do today." Salomon blinked, lowered his head mysteriously and said to Daisy, "
You know what I mean. It's...my main occupation."
Daisy thought for a few seconds, and her expression suddenly became horrified.
"Vampire or werewolf?" She lowered her voice involuntarily, and at the same time looked around the amphitheatre. "Is it in this classroom?" She sniffed and tried to lower her voice until only the air flow was left.
There was a hiss in his throat. Salomon could clearly feel Darcy's body shaking, because she was almost tightening in Salomon's position. "Is it that undergraduate? Oh my God, I
I just pushed her! Is she looking at me now?"
"Uh..." Salomon smiled awkwardly at the undergraduate, "I think she just wants to settle the score with you after class. Not a vampire, not a werewolf, but..."
"That painting!" Darcy let go of her hands holding Salomon's neck. Her eyes widened and she looked even more frightened.
The painting she was referring to was an 1864 oil painting by Sir Edwin Henry Landseer. It hung on the wall of the exam center and showed two biting sailors.
The flesh-and-blood polar bear was inspired by the disappearance of the British Arctic expedition in 1845. However, the terrifying picture is not the reason why Daisy associates it with it. The horror of this painting comes from a command from the 1920s.
There is a horrifying rumor - a student who was taking an exam committed suicide by inserting a pencil into his eye at the exam site. Before committing suicide, the student wrote "the polar bears made me do it" on the test paper. But if you want to trace it back, there is
The only rumor that has been recorded accurately is a legend among students in the 1960s: anyone who sat in front of this painting during exams would fail.
From now on, when the school holds exams, the painting will be covered with a Union Jack of sufficient size.
"The cause of death of the last two survivors of Franklin's expedition was cannibalism." Daisy became more and more frightened as she spoke, but Salomon rolled his eyes. What a bad superstition! Although some magic and superstition are related
It's a big connection, but less than two hundred years later, a painting that is hated by everyone at the same time can't cause any big trouble. What's more, Oxford University has many more ghost stories than Holloway College, such as
The ghost of the beheaded Archbishop of Canterbury William Lau in the library of St. John's College. There were also genuine vampires at Oxford University who had convulsions and wanted to fall in love with humans. Salomon killed them all on the first day of class at Oxford.
, what’s so scary about mere ghosts and curses?
"I've wanted to burn that painting for a long time! Isn't it? Is that the cemetery of Queen Mary College?"
"No, do you think I am a priest who exorcises demons? Although I am a professional exorcist, it does not mean that I will tell you all the details of exorcism." Faced with Salomon's question,
Daisy's eyes were filled with confusion. "Do you know Professor Selvig's achievements in folklore? This is Professor Selvig's newly expanded academic field. Although in the face of serious physics, folklore seems
It's like a castle made of sand, but this does not prevent him from studying religious folklore through mythology - especially since Saul also has a good relationship with him, he has almost no opponents in this field."
"I...how come I don't know about this!" Daisy became bolder again. She took advantage of the ringtone and patted Salomon's arm hard. Salomon shrugged with an innocent expression. "Let's go quickly.
, otherwise that bitch will come to trouble me!" Daisy pulled the two-meter-tall mystic and tried to hide in the leaving crowd. Obviously, she didn't know that doing so was of no use, but instead made her and Salo
Even more conspicuous. When they finally got away from the crowd and headed to the professor's office, Daisy finally asked the question she had been suppressing for a long time (about five minutes).
"Then why did you come to Professor Selvig?"
"Jerusalem Grove is a small town located on the east side of Cumberland City, twenty miles north of Portland." Salomon said, "I need to go there to recover a lost black magic book. That book can
Vampires are created through terrible rituals, and I plan to take my apprentice there to see. Before that, I want to find old newspapers published by the Cumberland City Library in England and look for clues, because the magic book is
Brought to the United States from England. I believe Professor Selvig can be of help."