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a priori

Definitions

  • WordNet 3.6
    • adj a priori involving deductive reasoning from a general principle to a necessary effect; not supported by fact "an a priori judgment"
    • adj a priori based on hypothesis or theory rather than experiment
    • adv a priori derived by logic, without observed facts
    • ***
Webster's Revised Unabridged Dictionary
    • A priori (Philos) Applied to knowledge and conceptions assumed, or presupposed, as prior to experience, in order to make experience rational or possible. "A priori, that is, form these necessities of the mind or forms of thinking, which, though first revealed to us by experience, must yet have preëxisted in order to make experience possible."
    • A priori (Logic) Characterizing that kind of reasoning which deduces consequences from definitions formed, or principles assumed, or which infers effects from causes previously known; deductive or deductively. The reverse of a posteriori.
    • ***
Chambers's Twentieth Century Dictionary
    • A priori ā pri-ō′rī, a term applied to reasoning from what is prior, logically or chronologically, e.g. reasoning from cause to effect; from a general principle to its consequences; even from observed fact to another fact or principle not observed, or to arguing from pre-existing knowledge, or even cherished prejudices; (Kant) from the forms of cognition independent of experience
    • ***

Etymology

Webster's Revised Unabridged Dictionary
L. a, ab,) + prior, former
Chambers's Twentieth Century Dictionary
L. a, ab, from, priori, abl. of prior, preceding.

Usage

In literature:

Of its priory, dedicated to St Rufus, a few ruins still exist.
"Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 6" by Various
Outside the north-west angle of the castle, Richard de Clare in 1256 founded a Dominican priory, which was burnt by Glendower in 1404.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3" by Various
I passed by the Priory to-day, and it looked like a great lonely Tomb.
"My First Book:" by Various
The priory church is still a private property in the late 20th century, but no longer a farm.
"Romanesque Art in Southern Manche: Album" by Marie Lebert
The Lower Fifth was a long way removed from the Sixth Form at Wakehurst Priory.
"Just Gerry" by Christine Chaundler
He came over to Breysgate Priory with a formal offer and the demand for a formal answer.
"The Great Miss Driver" by Anthony Hope
These hospitals were put under the charge of a priory, and endowed out of tithes payable to the secular clergy.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 8" by Various
Besides the parish church there is a Roman Catholic priory and church.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 1" by Various
Intuitions and deductions a priori are empty.
"Creative Intelligence" by John Dewey, Addison W. Moore, Harold Chapman Brown, George H. Mead, Boyd H. Bode, Henry Waldgrave, Stuart James, Hayden Tufts, Horace M. Kallen
In Llanfaes there was formerly a Dominican priory, but in 1542 Henry VIII.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4" by Various
About this time he happened to pay a visit to Christchurch Priory and by the vaulted airs of that sanctuary he was greatly thrilled.
"Sinister Street, vol. 1" by Compton Mackenzie
In recent years a large number of Palaeolithic implements have been found at Priory Bay near St. Helen's.
"The Geological Story of the Isle of Wight" by J. Cecil Hughes
Three centuries before Milton's day, the Benedictine nuns built a priory close by the ancient church.
"Milton's England" by Lucia Ames Mead
Papa took a long solitary ride that day through the warren, and away by Penruthyn Priory, and did not return till dark.
"Willing to Die" by Joseph Sheridan Le Fanu
The question must be studied with an open mind, and not subject to a priori assumptions.
"A Short History of English Liberalism" by Walter Lyon Blease
There are ruins of a Franciscan priory, with a lofty tower.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8" by Various
The town itself has nothing to boast of beyond the old-fashioned church, which once formed part of a priory, built in the time of Henry I.
"Englefield Grange" by H. B. Paull
About three miles from the centre of Great Malvern lies the hamlet of Little Malvern, dominated by its priory, now used as a parish church.
"Stained Glass Tours in England" by Charles Hitchcock Sherrill
The revenues of all the foreign priories in England, a hundred and ten in number, were appropriated to the crown.
"St. George for England" by G. A. Henty
If anything's the matter, if there's a danger of any kind, it's at the Priory.
"The Secret of Sarek" by Maurice Leblanc
***

In news:

Abstract —This paper proposes an efficient method for the production of high quality radiosity solutions which uses an a priori knowledge of the dynamic properties of the scene to exploit temporal coherence .
Magdalena Rybarikova of Slovakia plays a forehand during her match against Sabine Lisicki of Germany during the fifth day of the AEGON Classic at the Edgbaston Priory Club on June 10, 2011 in Birmingham, England.
Magdalena Rybarikova of Slovakia looks on, as a shot goes wide during her match against Sabine Lisicki of Germany during the fifth day of the AEGON Classic at the Edgbaston Priory Club on June 10, 2011 in Birmingham, England.
Several approaches have shown the benefits of planning using a hierarchy given a priori.
(WEAU)—UW –Eau Claire hosted a rededication ceremony at the priory in Eau Claire Thursday afternoon.
Ezekiel Elliott (right) of John Burroughs follows a hole made by Jackson Maritz for a long gain in the Bombers' win over Priory on Saturday, Sept 8, 2012 at John Burroughs School in Ladue, Mo.
Founded by Queen Emma for girls at a time when educational opportunities were rare, St Andrew's Priory today sends 100 percent of grads to college.
CHESTERTOWN -?A workshop with a mission to enhance participants' self-expression and discovery is set for May 30 at The Priory spiritual retreat.
A bit like a boy band with boundless teen spirit, Priory is growing up fast.
The manicured lawns make the Cluniac priory look prosperous even as a ruins.
A council worker fixed a camera at the parking lot in Leicester, England, where archaeologists unearthed a skeleton, very likely Richard III 's, amid the remains of an ancient priory.
There are a priori reasons to dislike Superman Returns.
Down a long, concrete staircase, stashed in the bowels of Priory's athletic building, you'll find the wrestling room.
The Primary Domain Controller (PDC) is a Digital Prioris HX 5133DP, with 64MB of RAM, dual 133MHz Pentiums, and a 1GB hard disk.
***

In science:

There is no a priori relation between T0 and the parameters of the SRBRF model. A similar situation occurs in Ising dipolar glasses, where a probability distribution of relaxation times g (ln τ ) has been used in combination with an empirical Debye-type response .
Dynamics of relaxor ferroelectrics
As a consequence, communications must be kept to a minimum. A side effect is also that nothing can prevent a priori the connection of a solver that do not understand correctly the input format (no type safety).
Component Programming and Interoperability in Constraint Solver Design
It is not a priori obvious that a non-linear model with α quenching and magnetic buoyancy - like Model 1, will have a η−1 dependence of the dynamo period.
Characteristics Of A Magnetic Buoyancy Driven Solar Dynamo Model
The framework allows us to define the theory from a geometric point of view, without a priori assumptions on the magnetic field and on the existence of a global potential.
The First Law of Isolated Horizons via Noether Theorem
The two choices for the 1-handle detour are homeomorphic to each other (as abstract surfaces with boundary a circle) since there is no a priori difference between the meridian and the longitude of a torus.
Bi-oriented Quantum Algebras, and a Generalized Alexander Polynomial for Virtual Links
Note that this implies an upper bound of 2L on the group order. A common use of black box groups is to model finite matrix groups over finite fields. A matrix group, GL(d, q) (dimension d over GF(q)), is a black box group with an encoding of length L = d2 log2 q, and its order is a priori bounded by 2L .
Towards a practical, theoretically sound algorithm for random generation in finite groups
Loops and multiple edges are a priori allowed. A planar map is rooted if there is a root, i.e. a distinguished edge on the border of the infinite face, which is oriented counterclockwise.
Random Planar Lattices and Integrated SuperBrownian Excursion
First, in the rest of this section, T (Q), which is a priori only defined as a subset of edges of Q′ together with their incident vertices, is shown to be in fact a well labelled tree with n edges.
Random Planar Lattices and Integrated SuperBrownian Excursion
P some polynomial, exhibits their finiteness and continuity with respect to f, for arbitrary test functions fi and arbitrary weight functions hi . Θµν (f ) being a quadratic form on the Wightman domain of ϕh, its commutator with ϕh (g) is a priori well defined as a quadratic form.
Generalized free fields and the AdS-CFT correspondence
For a given physical situation, we propose to select a form of C (ω ) a priori and compute the corresponding equilibrium state.
Generalized thermodynamics and Fokker-Planck equations. Applications to stellar dynamics, two-dimensional turbulence and Jupiter's great red spot
Disconnection Exponent. A discussion of the intersection exponents of random walks a priori requires a number L ≥ 2 of them.
Conformal Fractal Geometry and Boundary Quantum Gravity
Of course it has to be consistent with the wave equation, that is, together with a solution ψ to the wave equation the wave function eiΛ(t)ψ also is a solution to the appropriately gauged wave equation. A priori one can not exclude the existence of such a consistent time evolution.
Generally covariant Quantum Mechanics
It is a priori not clear whether simulations that explore a tiny fraction of the period can take advantage from the omission of zeros, so let us check this by a simple simulation.
Pseudo Random Coins Show More Heads Than Tails
It turns out that a direct application of the standard a priori estimates for the construction below does not seem to lead to a manifold structure based on Sobolev spaces, which would have been more natural for the evolution problem, and which would have led to a Hilbert manifold structure.
Manifold structures for sets of solutions of the general relativistic constraint equations
V is a random convolution operator V f (p) = R dqV (q)f (p + q) with covariance < V (p) ¯V (q) >= δ(p − q). A delta or short range covariance in x space translates into a white noise in p space, that is all momenta correspond to independent variables with a priori equal weight.
Random Matrices and the Anderson Model
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