Dewey Decimal Classification

“The Dewey Decimal Classification (DDC), or Dewey Decimal System, is a proprietary library classification system first published by Melvil Dewey in 1876. It has been revised and expanded through 23 major editions, the latest issued in 2011. The classification was notable in its time because it introduced the concepts of relative location and relative index. It makes use of three-digit Arabic numerals for main classes with decimals as expansions for more detail.”

List of Dewey Decimal classes

Zero stroke

“Zero stroke or cipher stroke was a mental disorder, reportedly diagnosed by physicians in Germany under the Weimar Republic and said to be caused by hyperinflation of the early 1920s. The disorder was primarily characterized by the desire of patients to write endless rows of zeros, which are also referred to as ciphers.”


Una dicha matemáticamente perfecta

«Y vuestra misión es la de someter al bendito yugo de la razón todos aquellos seres desconocidos que pueblen los demás planetas y que tal vez se encuentren en el incivil estado de la libertad. Y si estos seres no comprendieran por las buenas que les aportamos una dicha matemáticamente perfecta, deberemos y debemos obligarles a esta vida feliz.»

Yevgueni Zamiatin, Nosotros.

Lo Sublime

“Kant distinguía dos especies de Sublime, matemático y dinámico, lo inmenso y lo poderoso, lo desmesurado y lo informe. Ambas tenían la propiedad de deshacer la composición orgánica, una desbordándola, la otra quebrándola. En lo sublime matemático, la unidad de medida extensiva cambia tanto que la imaginación ya no logra comprenderla, choca con su propio límite, se anonada, pero da lugar a una facultad pensante que nos fuerza a concebir lo inmenso o lo desmesurado como todo. En lo sublime dinámico, es la intensidad la que se eleva a una potencia tal que ciega o aniquila nuestro ser orgánico, lo deja aterrorizado, pero suscita una facultad pensante por la cual nos sentimos superiores a aquello que nos aniquila, para descubrir en nosotros un espíritu supraorgánico que domina toda la vida inorgánica de las cosas: entonces ya no tenemos miedo, pues sabemos que nuestra «destinación» espiritual es lisa y llanamente invencible”.

La imagen-movimiento
Gilles Deleuze
Ediciones Paidós

Fuzzy logic

“Fuzzy logic is a form of many-valued logic derived from fuzzy set theory to deal with reasoning that is fluid or approximate rather than fixed and exact. In contrast with “crisp logic”, where binary sets have two-valued logic, fuzzy logic variables may have a truth value that ranges in degree between 0 and 1. In simple words we can say fuzzy logic is a super set of conventional (boolean) logic that has been extended to handle the concept of partial truth–the truth values between completely true and completely false.”



Fringe, Seasons 1-2 (2008-2010)
J. J. Abrams, Alex Kurtzman and Roberto Orci

• Человек с киноаппаратом / Man with a Movie Camera (1929) [watch]
Dziga Vertov

• Singin’ in the Rain (1952)
Stanley Donen and Gene Kelly

• The Ghost Writer (2010)
Roman Polanski

• El Abecedario de Gilles Deleuze. A de Animal (1988) [watch]

• Some Like It Hot (1959)
Billy Wilder

• Dog Day Afternoon (1975)
Sidney Lumet


Arithmomania is a mental disorder that may be seen as an expression of obsessive-compulsive disorder. Sufferers from this disorder have a strong need to count their actions or objects in their surroundings.

Sufferers may for instance feel compelled to count the steps while ascending or descending a flight of stairs or to count the number of letters in words. They often feel it is necessary to perform an action a certain number of times to prevent alleged calamities. Other examples include counting tiles on the floor or ceiling, the number of lines on the highway, or simply the number of times one breathes or blinks.

Arithmomania sometimes develops into a complex system in which the sufferer assigns values or numbers to people, objects and events in order to deduce their coherence.


Folklore concerning vampires often depicts them with arithmomania, such as a compulsion to count seeds or grains of rice. More lightheartedly, the muppet Count von Count from Sesame Street appears to be a fellow “sufferer”.


Never sure

“There is no more greater error in science than to believe that just because some mathematical calculation has been completed some aspect of nature is certain.”

Alfred North Whitehead


In statistics, an outlier is an observation that is numerically distant from the rest of the data. Grubbs defined an outlier as:
“An outlying observation, or outlier, is one that appears to deviate markedly from other members of the sample in which it occurs.”