Aprile 2012
104 post
Apr 30
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Apr 30
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Apr 29
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Apr 29
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“nobody wins. ask Caesar.”
– Charles Bukowski. (via sysyphe)
Apr 29
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Apr 28
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Apr 28
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Apr 27
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Apr 27
“Ogni tre ami c’è una stella marina.. amo per amo c’è una stella che trema.....”
– De André (via brightlyme)
Apr 27
30 note
No, lei non è la più bella al mondo: piccola, buffa, col faccino tondo. No, non è la più bella al mondo, ma va bene così :)
Apr 26
Apr 26
377753 note
How to catch a lion in Sahara
Problem: To Catch a Lion in the Sahara Desert. Mathematical Methods The Hilbert (axiomatic) method We place a locked cage onto a given point in the desert. After that we introduce the following logical system: Axiom 1: The set of lions in the Sahara is not empty.  Axiom 2: If there exists a lion in the Sahara, then there exists a lion in the cage.  Procedure: If P is a theorem, and if the...
Apr 26
Apr 26
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Apr 25
262 note
A mathematician
lifeincartooonmotion: is a mapping from the set of theorems to the set {trivial, nontrivial}
Apr 25
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Apr 24
4 note
Banach-Tarski Paradox: You have one cow. You cut it into 4 parts and rearrange them. Now you have two cows.
Hairy Ball Theorem: You have two cows. Their hair cannot be combed.
Brouwer Fixed Point Theorem: You have a circular pasture covered in cows. At least one of them is stationary.
Cauchy's Integral Theorem: You have a fence enclosing a pasture. The line integral of the number of cows over the edge of the pasture is zero.
Morley's Categoricity Theorem: You have an uncountable field of cows. It is the exact same as every other uncountable field of cows.
Cantor-Bernstein-Schroeder Theorem: You have two cows. Each of them is bigger than the other. Therefore they are the same size.
Pigeonhole Principle: You have n+1 cows and n pastures. Therefore you have a pasture with two cows.
Cayley's Theorem: You have a set of cows. Any group action on this set of cows is equivalent to a rearrangement of the cows.
Hahn-Banach Theorem: You have a closed subspace of a cow. This can be extended to a total bounded linear cow.
Jordan Curve Theorem: Your cow has an inside and an outside.
Heine-Borel Theorem: If your cow pasture is closed and bounded, then every sequence of cows has a convergent subsequence.
Whitney Embedding Theorem: A smooth m-dimensional cow can be embedded in 2m-dimensional Euclidean space.
Prime Number Theorem: As the number N of cows you have increases, the probability that an arbitrary cow will be turned into prime ribs approaches 1/log(N).
Nullstellensatz: The ideal cow in a given variety of cows is the most radical cow.
Classification of Finite Simple Groups: You have 26 sporadic cows.
Apr 24
12 note
Today
unoetrino: Today, ninety-seven years ago, Armenian genocide started in Constantinople. I don’t have anything intelligent or new to say about that, but I believe it’s important to remember.
Apr 24
6 note
Apr 24
Apr 24
9 note
Il baratto torna in auge in Sardegna →
Apr 23
1 nota
Curiositasmundi: cornerlist: - Facciamo che se... →
cornerlist: - Facciamo che se vengo ti chiamo. - No, facciamo che mi chiami se non vieni, così ti tieni in allenamento con le scuse. - Non hai le palle. - Ce le ho, ma le uso in privato. In pubblico preferisco usare il cervello. - Ci vorrebbe una democrazia dal basso. - Più…
Apr 23
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Apr 23
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Apr 23
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Apr 22
78 note
Apr 22
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Apr 22
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Apr 21
24 note
Apr 21
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Apr 21
5556 note
I genitori sono una brutta razza: per difendere il proprio cucciolo farebbero di tutto: controllare le sue amicizie, spiarlo, renderlo socialmente inetto, investirlo (del resto accompagnarlo a scuola coi mezzi è troppo, troppo pericoloso), origliare le sue telefonate, leggere le sue mail… Con la giustificazione “sono la mamma/il papà, ho diritto di fare quel che credo per il meglio di...
Apr 20
Apr 20
68 note
Apr 20
“MILANO - Da un nuovo tipo di analisi, squisitamente matematica, sui dati...”
– Rianalizzati i dati di Viking del 1976: evidenze di attività microbica Vita su un altro pianeta. Erano anni che si vociferava in particolare riguardo i microbi rinvenuti su campioni di meteorite. (via 3nding) Nel team che è arrivato a questa conclusione c’è anche un matematico dell’Università di...
Apr 20
11 note
Apr 20
21 note
Joyful Rain: 1+2+3+4+..... = -1/12 →
mesaprotector: Suppose you start with the number 1. Then you add 2, add 3, add 4, etc…. what do you get? Infinity, right? WRONG. Call the sum 1+2+3+4…=N. Consider the related series 1-2+3-4+5… the same as the original one, only you’re subtracting every other term. Now add up four copies of the series, like… Maybe this offers a...
Apr 19
2 note
“E voi intellettuali, ne avete già discusso cosa serve poi, menarla con la...”
– I nomadi - Il paese delle favole
Apr 19
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Apr 19
79 note
Diana
Sì, lo ammetto, ho un beagle, si chiama Diana e rotola morbidamente nella mia esistenza da 8 anni abbondanti. 
Apr 19