It is specified on page 00034 of the Principia Discordia.

Elsewhere in the Principia Discordia, it is mentioned that the Curse of Greyface occurred in 1166 BC, so this is presumably the start-date of the calendar.

While the abbreviation " YOLD " isn't used in the Principia, and the phrase " Year of Our Lady of Discord " is only mentioned once, it is a Discordian tradition to use that designation.

The story of Eris being snubbed and indirectly starting the Trojan War is recorded in the Principia, and is referred to as the Original Snub.

The concept of Eris as developed by the Principia Discordia is used and expanded upon in the science fiction work The Illuminatus!

Moore is also well known for the so-called " open question argument ", which is contained in his ( also greatly influential ) Principia Ethica.

Moore's argument for the indefinability of “ good ” ( and thus for the fallaciousness of the “ naturalistic fallacy ”) is often called the Open Question Argument ; it is presented in § 13 of Principia Ethica.

Most versions of Principia Discordia actually spell it as καλλιχτι, but this is definitely incorrect ; in the afterword of the 1979 Loompanics edition of Principia, Gregory Hill says that was because on the IBM typewriter he used, not all Greek letters coincided with Latin ones, and he didn't know enough of the letters to spot the mistake.

There is some dispute over priority of various ideas: Newton's Principia is certainly the seminal work and has been tremendously influential, and the systematic mathematics therein did not and could not have been stated earlier because calculus had not been developed.

Moore's argument in Principia Ethica is ( among other things ) a defense of ethical non-naturalism ; he argues that the term " good " ( in the sense of intrinsic value ) is indefinable, because it names a simple, non-natural property.

It is, rather, " one of those innumerable objects of thought which are themselves incapable of definition, because they are the ultimate terms by reference to which whatever is capable of definition must be defined " ( Principia Ethica § 10 ¶ 1 ).

The Principia Mathematica is a three-volume work on the foundations of mathematics, written by Alfred North Whitehead and Bertrand Russell and published in 1910, 1912, and 1913.

However, this is not the stronger sense of completeness desired for Principia Mathematica, since a given system of axioms ( such as those of Principia Mathematica ) may have many models, in some of which a given statement is true and in others of which that statement is false, so that the statement is left undecided by the axioms.

Newton's work in his Principia dealt with this in a further example of unification, in this case unifying Galileo's work on terrestrial gravity, Kepler's laws of planetary motion and the phenomenon of tides by explaining them with one single law: the law of universal gravitation.

The Principia is " justly regarded as one of the most important works in the history of science ".

" A more recent assessment has been that while acceptance of Newton's theories was not immediate, by the end of a century after publication in 1687, " no one could deny that " ( out of the ' Principia ') " a science had emerged that, at least in certain respects, so far exceeded anything that had ever gone before that it stood alone as the ultimate exemplar of science generally.

Both the ' Rules ' and the ' Phenomena ' evolved from one edition of the ' Principia ' to the next.

Even after it was superseded by Book 3 of the Principia, it survived complete, in more than one manuscript.

In his Philosophiae Naturalis Principia Mathematica, Newton tried to demonstrate that one can always decide if one is rotating with respect to the absolute space, measuring the apparent forces that arise only when an absolute rotation is performed.

Isaac Newton's Philosophiae Naturalis Principia Mathematica | Principia is one of the most influential works in the history of science.

* Publication of the 1st volume of Principia Mathematica by Alfred North Whitehead and Bertrand Russell, one of the most important and seminal works in mathematical logic and philosophy.

* Publication of the 3rd volume of Principia Mathematica by Alfred North Whitehead and Bertrand Russell, one of the most important and seminal works in mathematical logic and philosophy.

* Principia Discordia, the sacred text of Discordianism, holds that 23 ( along with the discordian prime 5 ) is one of the sacred numbers of Eris, goddess of discord.

* Publication of the 2nd edition of Principia Mathematica by Alfred North Whitehead and Bertrand Russell, one of the most important and seminal works in mathematical logic and philosophy.

Some knot-theoretic links contain multiple Borromean rings configurations ; one five-loop link of this type is used as a symbol in Discordianism, based on a depiction in the Principia Discordia.

This type theory is much less complicated than the one first set out in the Principia Mathematica, which included types for relations whose arguments were not necessarily all of the same type.

Amongst the collection are many rare items such as one of the two extant copies of the Gospel of Barnabas, a first edition of Philosophiae Naturalis Principia Mathematica by Sir Isaac Newton, and the only known extant copy of the little-known but invaluable On the mental inferiority of the people of Southern Africa by Dr David Livingstone.

As an instructive process, eidetic reduction might be viewed as processes of abstraction ; the works of Whitehead and Russell in their Principia Mathematica could give one a taste of those processes, or even the simple contemplation of mathematics itself in use: " How many ideas have you?

( 1 ) Principia ; ( 2 ) Via Praetoria ; ( 3 ) Via Principalis ; ( 4 ) Porta Principalis Dextra ; ( 5 ) Porta Praetoria ( main gate ); ( 6 ) Porta Principalis Sinistra ; ( 7 ) Porta Decumana ( back gate ).

The work done last spring ( 1913 ) makes it plain ( see illustration ) that the Principia fronted — in normal fashion — the main street of the fort ( gravel laid on cobbles ) running from the north to the south gate.

* A Short Comment on Sir Isaac Newton ’ s Principia ; to which is added, A Defence of Sir Isaac against the objections that have been made to several parts of his works ( 1770 )

Among the further details are these: that Scythianus lived " in the time of the Apostles "; that Terebinthus said the name of Buddas had been imposed on him ; that in the mountains he had been brought up by an angel ; that he had been convicted of imposture by a Persian prophet named Parcus, and by Labdacus, son of Mithra ; that in the disputation he taught concerning the sphere, the two luminaries, the transmigration of souls, and the war of the Principia against God ; that " Corbicius " or Corbicus, about the age of sixty, translated the books of Terebinthus ; that he made three chief disciples, Thomas, Addas, and Hermas, of whom he sent the first to Egypt, and the second to Scythia, keeping the third with him ; that the two former returned when he was in prison, and that he sent them to procure for him the books of the Christians, which he then studied.

G. E. Moore published his Principia Ethica in 1903 and argued that the attempts of ethical naturalists to translate ethical terms ( like good and bad ) into non-ethical ones ( like pleasing and displeasing ) committed the " naturalistic fallacy ".

*, see On Formally Undecidable Propositions of Principia Mathematica and Related Systems for details on English translations.

In a revised conclusion to the Principia ( see General Scholium ), Newton used his expression that became famous, Hypotheses non fingo (" I contrive no hypotheses ").

The opening sections of the ' Principia ' contain, in revised and extended form, nearly all of the content of Newton's 1684 tract ' De motu ...' ( see article De motu corporum in gyrum which summarises the topics and indicates where they reappear in the ' Principia ').

* The set of Gödel numbers of arithmetic proofs described in Kurt Gödel's paper " On formally undecidable propositions of Principia Mathematica and related systems I "; see Gödel's incompleteness theorems.

Newton had been urged to make a new edition of the ' Principia ' since the early 1690s, partly because copies of the first edition had already become very rare and expensive within a few years after 1687.

Meanwhile Newton ( 1642 – 1727 ) derived the relationship for wave velocity in solids, a cornerstone of physical acoustics ( Principia, 1687 ).

More ambitious was the Logic Theory Machine, a deduction system for the propositional logic of the Principia Mathematica, developed by Allen Newell, Herbert A. Simon and J. C. Shaw.

* Principia College, a college for Christian Scientists in Elsah, Illinois

File: GodfreyKneller-IsaacNewton-1689. jpg | Sir Isaac Newton ( 1642-1727 ): established three laws of motion and a law of universal gravitation in his Philosophiæ Naturalis Principia Mathematica ( 1687 ), laid foundations for classical mechanics, invented the reflecting telescope, observed that a prism splits white light into the colors of the visible spectrum, formulated a law of cooling, co-invented infinitesimal calculus

However, it is our everyday arithmetical practices such as counting which are fundamental ; for if a persistent discrepancy arose between counting and Principia, this would be treated as evidence of an error in Principia ( e. g., that Principia did not characterize numbers or addition correctly ), not as evidence of an error in everyday counting.

His lectures on modern art ( now known as the Paul Klee Notebooks ) at the Bauhaus have been compared for importance to Leonardo's Treatise on Painting and Newton's Principia Mathematica, constituting the Principia Aesthetica of a new era of art ;

Newton's own copy of his July 5th 1687 edition of Philosophiæ Naturalis Principia Mathematica ( or his Principia ), with hand-written corrections for the second edition.

Distinguishing between ends and means was a commonplace of ethics, but what made Moore ’ s Principia Ethica ( 1903 ) so important for the philosophical basis of Bloomsbury thought was Moore's conception of intrinsic worth as distinct from instrumental value.

Philosophiæ Naturalis Principia Mathematica, Latin for " Mathematical Principles of Natural Philosophy ", often referred to as simply the Principia, is a work in three books by Sir Isaac Newton, first published 5 July 1687.

Other evidence also shows Newton's absorption in the Principia: Newton for years kept up a regular programme of chemical or alchemical experiments, and he normally kept dated notes of them, but for a period from May 1684 to April 1686, Newton's chemical notebooks have no entries at all.

Isaac Newton | Newton's own first edition copy of his Principia, with handwritten corrections for the second edition.

The process of writing that first edition of the Principia went through several stages and drafts: some parts of the preliminary materials still survive, others are lost except for fragments and cross-references in other documents.