Contributed by
Vijay Fafat
A very short story from the ultramundane realm, relying on the theme that certain types of mathematical knowledge open up portals to higher dimensions.
A mathematical physicist, Lenglade, lives up high in an attic of a house (the housekeeper complains, “you perch as high as the rooster of the steeple [...] in the crow’s nest; one hundred and twenty steps well counted, of which forty in the dark!”). On a fine morning, on his blackboard, he finds Einstein’s formula E=mc^{2} written in a corner, and next to it, a strange, haunting extension of the formula. The formula makes no sense and yet, he is filled with a sense of fascination and admiration. The formula
(quoted from La formule: (A story of fourth dimension))
“had been written with a firm hand, the lying eight, symbol of infinity, was drawn regular and elegant, as he himself could not have done; the letters seemed to come out of a notebook calligraphy.”

He asks the housekeeper if anyone had visited his room but she denies, saying no one would come so far up in the house just to scribble something on the blackboard. Lenglade contemplates over the strange symbols:
(quoted from La formule: (A story of fourth dimension))
“The formula was written next to Einstein's equation, as if to complete it or simply to qualify it as incomplete. Lenglade's opinion, as far as he could have had one on the matter, tilted towards the last hypothesis. Energy, mass, speed… all fine… but Time? Le Temps, our great master, as Nordmann calls it, had not found a place in the prodigious equation, and Lenglade thought of the fairy from the old tale [of] the Sleeping Beauty. But the formula as presented was only part of an equation, the sign equivalence was missing. Mechanically Lenglade traced it ...”

Clearly, the formula is missing significant elements.
When the professor returns to his room in the evening, the blackboard has more additions:
(quoted from La formule: (A story of fourth dimension))
“His mouth agape, the professor stared at the enormous series of formulas and equations which covered the chalkboard, and one of them was now burning, final, in the fires of the setting sun.
 My God… stammered the scholar, I should have foreseen it… Einstein braked on the divine road, he did not want to steal the Great Wisdom, the intelligence of the Universe… God. While I…wretched…
He turned his back to the board and looked up at the darkened sky.
 Lord! I await your sentence!
And Lenglade abruptly vanished, was no more, as if he had never existed.
THE MAN WHO JUST DISCOVERED THE SECRET OF THE FOURTH DIMENSION, HAD JUST PAID THE PRICE FOR HIS TEMERITY.”

It seems by implication that the professor had completed his own equation as a split personality, and the equation became a magic talisman. The housekeeper who reads the equation the next morning disappears as well, implying that comprehension is not important, just reading the formula does the trick, strongly reminiscent of Cherniak’s story, “The Riddle of the Universe and its Solution”.
