The days of learning black magic in another world

It is a bit difficult to quickly break through to the fourth ring, but Riemann is really thinking about replacing his common magic with [Vine Strangling].

Although it doesn't mean much, but anyway, he is idle when he is on the road, so he can't help thinking about something that doesn't mean much, isn't it normal?

Using upper-level magic across major levels only exists when he is about to break through. He is currently level 32, so this way is useless.

He has seen the core of [Vine Strangling], which is to prove Euler's polyhedron theorem.

He still has a vague impression of topology, so he thinks he should be able to do it.

But it's useless for him to do it!insufficient level!

hateful.

The core of [Vine Entangling] is a spherical geometry problem—by the way, Riemann thinks this is probably the reason why the magic of the vine system has been lost, and even he still doesn’t know who the god corresponding to the wood system is. There is no name of the other party, Riemann thinks that the God of Light is probably a fanatical defender of the orthodox Euclidean geometry, and does not give anyone who engages in non-Euclidean geometry any way out.

Hmm... Riemann was thinking, in fact, the blood-sucking effect of [Vine Strangling] is completely dispensable, he just needs the entry of [One-time massive damage].

Can't he create a magic between [Vine Entangling] and [Vine Strangling]?

It seems... not impossible?

Used spherical geometry...try hyperbolic geometry?

Nothing happened, and what came out was still [Vine Entangling].

Well, it is estimated that the magical world has judged these two together. Indeed, it is a difference in the curvature of space.

From spherical geometry to Euler's theorem... Could it be that the core of the wood system is graph theory?It's not impossible, you can try.

But he didn't learn graph theory!

Riemann wailed in his heart while cleaning up the abyss monsters in this area expressionlessly, and teleporting to the next location.

Graph theory... Is the Seven Bridges problem from graph theory?

After Riemann recovered from the teleportation, he rushed to the next location while thinking.

The seven bridges problem is unsolvable...

Wait, no solution!

Riemann suddenly became excited - there is no solution!

He is excited because the development of mathematics in this world is obviously very unnatural. They develop corresponding methods and theories by solving problems, so it will definitely be a little different from the earth-there will be various kinds of mathematics on the earth. There is no such effort in this world to try to prove that a certain problem is unsolvable, or that a certain inference is wrong (Riemann: Shouldn’t it be?), that is to say—the process of proving that the Seven Bridges problem is unsolvable It can be judged by magic!He has some more ways to create new magic!

A burst of fire burned the abyss monster twisted and trying to escape into clean ashes. Looking at the pile of fly ash in front of him, Riemann felt a little excited.

He looked towards the last spot on the map.

Alright, it's just you guys, come and act as my new experimental subject for magic creation!

The location where Riemann reappeared was in a valley, and the vague location given by the Holy See finally came in handy once, instead of asking him to search around nearby—he just landed, and saw a group of black fur The worms are congregating with each other.

Riemann raised his right hand, stuck the shell, put down his right hand again, and finally waved his hand to make the soil in front of him gather into a table and a chair. Then he did it and began to recall the unsolvable proof method of the Seven Bridges problem.

In the quiet night, in a valley with no sign of life activity, under the moonlight and starry night, there is a tall and tall figure who is writing quickly under the brightness of the light ball, and not far away from him, the alien from the abyss They were dancing wildly, but they couldn't get close to him.

This scene is really unprecedented.

"It's done!"

Riemann stood up abruptly and shook the parchment that was still wet.

He closed his eyes, and in the vast spiritual world, a little starlight lit up, and then countless silver lines crazily expanded and spread around it.

Riemann felt good, he could feel that the magic power needed for this magic was within his ability.

This should be a three-ring magic, very good.

When the last silver thread was wound, a green light lit up in front of Riemann. He opened his eyes, wondering if he had succeeded in creating a vine magic... Well, judging by the color of the light, it should be more than half successful.

Then, he saw something emerging from the light.

A huge tree with waving branches.

Kind of like willow.

etc!This looks too much like the Whomping Willow!

Riemann was a little surprised. If the magic in this world could be named casually by the creator, he would definitely name this magic—【Summon the Whomping Willow】!

He narrowed his eyes and observed the effect of [Summon the Whomping Willow (tentative)].

Wow!It looked pretty good, its waving branches cut off the abyss caterpillar that had condensed into a large group, and the "half caterpillar" that was wriggling on the ground didn't have time to twitch twice before getting up and slamming down again .

"Hey..." Riemann couldn't help but let out a low sigh. Fortunately, the target was this group of abyssal monsters. Otherwise, no matter if this attack fell on anyone or any monster, he would definitely feel that he was a very, very cruel person. ——Only by using such attack magic.

He carefully observed the appearance of the abyss monster being beaten, but was thrown to the ground by a branch unexpectedly!

Riemann:!

He immediately wanted to control this crazy "willow tree"-this was his own summon!It's too outrageous to be hit by your own summons!

Although his blood bar didn't move at all, this world still maintains the basic judgment that the summoned object cannot cause damage to the summoner.

But that doesn't change the fact that he took a hit!

But his control didn't work. For some reason, he couldn't sense the other party at all. The connection between his spiritual world and this summoned creature seemed to be severed.

Riemann immediately wanted to cancel the magic, but the other party seemed to ignore his intentions and continued to stand mercilessly.

In the process of Riemann's vain attempt, another huge branch suddenly hit him.

"Summon Wind!"

Riemann immediately let the breeze roll him away from the attack path of the Whomping Willow!

After that, he tried various methods, whether it was control, attack, or cutting, none of them worked!

He could only dodge helplessly while thinking of a way...

—Damn it!There is no way!

Riemann gave up, and he made a teleportation scroll directly in the chaos, sent himself above the valley, and watched "Whipping Willow" go crazy from a condescending height.

The abyss caterpillar had been wiped out long ago...but he still didn't know what to do with it.

Riemann rubbed his temples with a headache.

"Okay... next time I will never try to create magic again, very vivid and profound lesson, thank you."

A burst of hurried footsteps distracted Riemann's attention. He raised his tired face and looked to the right rear.

are acquaintances.

"Iserveld?!"

It was none other than Riemann's old acquaintance, Bishop Pound, who yelled this sentence.

"Hi, Father Pound."

Bishop Pound's face was blank for a moment, and he really didn't know how to react at this moment.

Riemann glanced sadly at the bottom of the valley, and looked back at Bishop Pound: "You are late, I have already cleaned up the abyss monsters, so you don't need to go down, and I don't recommend you go down now."

Before Bishop Pound could understand the meaning of the second half of his sentence, Riemann tore the teleportation scroll and left.

The destination of this teleportation scroll is not his current base camp, Dark Forest, but Ulang King City.

Waylon Mansion.

Riemann spent some time waiting for the sun to rise, and by the way, nestled on the sofa in Villen's study to write something.

It was finally nine o'clock in the morning, Heller Velen's usual wake-up time, Riemann put away the manuscript paper in front of him, stretched himself, stood up and stood up straight.

Heller Velen has not been living peacefully these days.

After the Holy See released the news of Riemann's defection, he has been in a state of "jaw falling off".

Although there seems to be signs in retrospect... Riemann may be the most indifferent person he has ever seen towards God, and he always encourages him to do experiments in different ways.

But...but!How could it be so sudden!

While he was worried about whether Riemann would be caught by the Holy See, he was worried about whether he would be found by the Holy See. By the way, he also had doubts about life—that is, he kept asking himself "How could this be?!" In just a few days, He lost a lot of weight in a daze.

At nine o'clock, after washing up in bed, he slowly climbed out of bed in his pajamas, and walked out slowly, only to run into someone who should never be here.

——"Riemann?!"

Riemann smiled at him: "Long time no see, Heller."

Heller Velen's current state can only be described in two words, that is a combination of "dancing" and "incoherent".

"You—I—you you you—here—?!"

Riemann approached him, patted him on the shoulder, and calmed him down: "Calm down."

"Calm down?! How can I be calm?! My God! Is what the Holy See said true? Did you really defect? ​​Did they slander you! Did you get involved in some strange political struggle?! I don't understand , how did you suddenly become a magician?!"

Riemann bent his eyes: "No, they didn't slander me, and I didn't get involved in any political struggles. As for the latter question, Xingxi Academy exists to train magicians."

Heller: "?! What???"

Heller Velen immediately made up a bunch of plots in his mind, and Riemann decided to add another fire to him.

"Of course, the magicians trained by Xingxi Academy are also recognized by the Holy See. Although they need to remain anonymous for the rest of their lives... they are indeed members of the Holy See. So, I have actually accepted this reality, but... it's a long story, A simple summary is that in a certain mission, there was such a village of magicians isolated from the world. They probably hadn't contacted outsiders for hundreds of years, and they didn't cause any harm to anyone. But because the Holy See found them, they Decided to massacre this village..."

Heller Velen: "Oh my god..."

Riemann added his "mental journey" again: "I think you may not understand, but after becoming a magician, I can't help but think, what is the difference between me and them? Magicians who have done bad things are also That's all, but the people in those villages, they clearly—"

Heller Velen: "Oh..."

Riemann knew that Velen had already leaned towards him.