In memory of singer/songwriter
Jason Molina, who died March 16:
Wednesday, March 27, 2013
Easter Egg
Saturday, March 16, 2013
Puzzles
For readers of The Daily Princetonian :
(From a site advertised in the
Princetonian on March 11, 2013)
For readers of The Harvard Crimson :
For some background, see Crimson Easter Egg and the Diamond 16 Puzzle.
For some (very loosely) related narrative, see Crosswicks in this journal
and the Crosswicks Curse in a new novel by Joyce Carol Oates.
"There is such a thing as a tesseract."
— Crosswicks author Madeleine L'Engle
Monday, September 17, 2012
Pattern Conception
( Continued from yesterday's post FLT )
Context Part I —
"In 1957, George Miller initiated a research programme at Harvard University to investigate rule-learning, in situations where participants are exposed to stimuli generated by rules, but are not told about those rules. The research program was designed to understand how, given exposure to some finite subset of stimuli, a participant could 'induce' a set of rules that would allow them to recognize novel members of the broader set. The stimuli in question could be meaningless strings of letters, spoken syllables or other sounds, or structured images. Conceived broadly, the project was a seminal first attempt to understand how observers, exposed to a set of stimuli, could come up with a set of principles, patterns, rules or hypotheses that generalized over their observations. Such abstract principles, patterns, rules or hypotheses then allow the observer to recognize not just the previously seen stimuli, but a wide range of other stimuli consistent with them. Miller termed this approach 'pattern conception ' (as opposed to 'pattern perception'), because the abstract patterns in question were too abstract to be 'truly perceptual.'….
…. the 'grammatical rules' in such a system are drawn from the discipline of formal language theory (FLT)…."
— W. Tecumseh Fitch, Angela D. Friederici, and Peter Hagoort, "Pattern Perception and Computational Complexity: Introduction to the Special Issue," Phil. Trans. R. Soc. B (2012) 367, 1925-1932
Context Part II —
Context Part III —
A four-color theorem describes the mathematics of
general structures, not just symbol-strings, formed from
four kinds of things— for instance, from the four elements
of the finite Galois field GF(4), or the four bases of DNA.
Context Part IV —
A quotation from William P. Thurston, a mathematician
who died on Aug. 21, 2012—
"It may sound almost circular to say that
what mathematicians are accomplishing
is to advance human understanding of mathematics.
I will not try to resolve this
by discussing what mathematics is,
because it would take us far afield.
Mathematicians generally feel that they know
what mathematics is, but find it difficult
to give a good direct definition.
It is interesting to try. For me,
'the theory of formal patterns'
has come the closest, but to discuss this
would be a whole essay in itself."
Related material from a literate source—
"So we moved, and they, in a formal pattern"
Formal Patterns—
Not formal language theory but rather
finite projective geometry provides a graphic grammar
of abstract design—
See also, elsewhere in this journal,
Crimson Easter Egg and Formal Pattern.
Monday, January 4, 2010
Google’s Apple Tree
Google has illuminated its search page today with a falling apple in honor of what it is pleased to call the birthday of Newton. (When Newton was born, the calendar showed it was Christmas Day, 1642; Google prefers to associate Sir Isaac with a later version of the calendar.) Some related observations–
A pair of book covers in honor of the dies natalis of T. S. Eliot–
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Thursday, July 2, 2009
Thursday July 2, 2009
on a joke by George Carlin,
a passage by Kierkegaard,
and the death on this date
12 years ago
of actor James Stewart
“Thank you, Mr. Twain. Have your people call my people.” –George Carlin on learning he had won the Mark Twain award. Twain’s people were Protestant, Carlin’s Catholic.
The Protestant Kierkegaard:
“… the moment is not properly an atom of time but an atom of eternity. It is the first reflection of eternity in time, its first attempt, as it were, at stopping time….
Once here in Copenhagen there were two actors who probably never thought that their performance could have a deeper significance. They stepped forth onto the stage, placed themselves opposite each other, and then began the mimical representation of one or another passionate conflict. When the mimical act was in full swing and the spectators’ eyes followed the story with expectation of what was to follow, they suddenly stopped and remained motionless as though petrified in the mimical expression of the moment. The effect of this can he exceedingly comical, for the moment in an accidental way becomes commensurable with the eternal.”
Catholic tableau
(with Vivien Leigh
representing the Church)
of Salvation by Works —
Protestant tableau
(with James Stewart
as Protestant Pilgrim)
of Salvation by Grace —
Click on either tableau
for a (much) larger image.
“An unscrupulous jeweler will swap diamonds for cheaper ones when jewelry is dropped off to be sized or repaired, he said.
‘It happens all the time,’ Martin said. ‘Nobody’s watching.'”