In 1983 he wrote an extended manuscript ( about 600 pages ) entitled Pursuing Stacks, stimulated by correspondence with Ronald Brown, ( see also R. Brown and Tim Porter at University of Bangor in Wales ), and starting with a letter addressed to Daniel Quillen.

The 21 consonant letters in the English alphabet are B, C, D, F, G, H, J, K, L, M, N, P, Q, R, S, T, V, X, Z, and usually W and Y: The letter Y stands for the consonant in " yoke ", the vowel in " myth " and the vowel in " funny ", and " yummy " for both consonant and vowel, for examples ; W almost always represents a consonant except in rare words ( mostly loanwords from Welsh ) like " crwth " " cwm ".

If the relative priorities of these substituents need to be established, R takes priority over S. When this happens, the descriptor of the stereocenter is a lowercase letter ( r or s ) instead of the uppercase letter normally used.

For example, he believed ( as most Romans ) that his ancestor Appius Claudius Caecus had used the censorship to introduce the letter " R " and so used his own term to introduce his new letters.

A simple electric circuit, where current is represented by the letter i. The relationship between the voltage ( V ), resistance ( R ), and current ( I ) is V = IR ; this is known as Ohm's Law.

For example, the Cyrillic letter Р is usually written as R in the Latin script, although in many cases it is not as simple as a one-for-one equivalence.

) Thus, for example, a 2x6 rectangle and a 3x4 rectangle are equal but not congruent, and the letter R is congruent to its mirror image.

The Rankine temperature scale was created to use degree intervals the same size as those of the Fahrenheit scale, such that a temperature difference of one degree Rankine ( 1 R ) is equal to a difference of 1 ° F, except that absolute zero is 0 R – the same way that the Kelvin temperature scale matches the Celsius scale, except that absolute zero is 0 K. The Fahrenheit scale uses ( in the same manner as the later Celsius scale ) the symbol ° to denote a point on the temperature scale and the letter F to indicate the use of the Fahrenheit scale ( e. g. " Gallium melts at 85. 5763 ° F "), as well as to denote a difference between temperatures or an uncertainty in temperature ( e. g. " The output of the heat exchanger experiences an increase of 72 ° F " and " Our standard uncertainty is ± 5 ° F ").

For example, Latin P came to be written like Greek rho ( written Ρ but pronounced ), so the Roman letter equivalent to rho was modified to R to keep it distinct.

Regional roads, designated with the letter R, are a mix of primary and secondary routes, which serve as feeder roads to National roads ; while Inter-Regional roads, designated with the prefix IR, connect major settlements across regional borders.

Hard bedrock, which is not soil, uses the letter R.

Generally, each NOAA hull number is written with a space between the letter and the three-digit number, as in, for example, NOAAS Nancy Foster ( R 352 ) or NOAAS Thomas Jefferson ( S 222 ).

Usually known as the Epistola ad Mellitum, it conflicts with the letter sent to Æthelberht, which the historian R. A. Markus sees as a turning point in missionary history, when forcible conversion gave way to persuasion.

Such distortions of Germanic mythology were denounced by J. R. R. Tolkien, e. g. in a 1941 letter where he speaks of Hitler's corruption of "... that noble northern spirit, a supreme contribution to Europe, which I have ever loved and tried to present in its true light.

He uses O instead of I, Q instead of L, R instead of F, and S instead of N. The resemblance to the letters is a bit more strained ( most notably that the " O ," a straight line, bears no resemblance to an actual letter O ), but this scheme has the advantage that it uses 12 consecutive letters of the alphabet.

R ( named ar ) is the eighteenth letter of the ISO basic Latin alphabet.

The use of a SI prefix symbol or the letter ' R ' circumvents the problem that decimal separators tend to ' disappear ' when photocopying a printed circuit diagram.

In phonetics, rhotic consonants, also called tremulants or " R-like " sounds, are liquid consonants that are traditionally represented orthographically by symbols derived from the Greek letter rho, including ⟨ R ⟩, ⟨ r ⟩ from the Latin script and ⟨ Р ⟩, ⟨ p ⟩ from the Cyrillic script.

The letter " R " was chosen because it was not used by many other music equipment companies, therefore it would stand out in trade show directories and industry listings.

As a result, then Florida Congressman Mark Foley ( R ) agreed to sign the letter.

* R. H. Allen represented the " kh " sound by ' h ' with a dot above ( ḣ ), and at least one astronomy book ( a book by Patrick Moore ) using R. H. Allen as a source, has misread this unfamiliar letter as ' li '.

The War Department wrote Mr. Manuel a letter and said he was a hero.

I saw that letter.

Kodyke had appeared at the mine one day bearing a letter from Kruger.

And indeed, his postcard did draw from Walter a letter recommending his friend, the poet Nicolas Manas, to his friend Meredith Wilder.

When he started school at the age of five-and-a-half, he could not understand why the alphabet begins with the letter A, instead of C, as in the scale.

His letter had suggested we meet at my hotel at noon on Sunday, and I came into the lobby as the clock struck twelve.

Mr. Justice Taney's Dred Scott decision in 1857 was unpopular in the North, and soon became a dead letter.

In Figure 2, the points in the network are designated by a letter accompanied by a number.

nor was she moved by a letter from Wright pointing out that if he was not `` compelled to spend money on useless lawyer's bills, useless hotel bills, and useless doctor's bills '', he could more quickly provide Miriam with a suitable home either in Los Angeles or Paris, as she preferred.

A letter awaited her at Princeton.

`` Dear Miss Steichen: It is a very good letter you send me -- softens the intensity of this guerilla warfare I am carrying on up here.

In the same way he coupled Molesworth and Wharton in a letter to Archbishop King, and he had earlier described him as `` the worst of them '' in some `` Observations '' on the Irish Privy Council submitted to Oxford.

It purports to be a letter from Steele to a friend at court, who, in Miss Blanchard's opinion, could only be meant as Swift.

He closes his `` letter '' by demanding that Dunkirk be demolished, that the Pretender be forced to move farther away from the coast of England, and that the Queen and the House of Hanover come to a better understanding.

An accompanying sympathetic letter explained that inside the envelope was a name for Mrs. Coolidge's first granddaughter.

Every letter answers itself in a couple of weeks ''.

The use of map coordinates was begun when the senior officers began to select tactical points by designating a spot as `` near the letter o in the word mountain ''.

The result was that I found myself in the ridiculous position of having made a formal engagement by letter for the next week, only two days before my departure from London.

It need hardly be remarked that Thompson was not generally known for his scrupulosity about keeping his social engagements, which makes his irritation in this letter all the more significant.

For his part, Thompson had explained in a previous letter that there would be nothing but an honorable friendship between Katie and himself.

She ended her letter with the assurance that she considered his friendship for her daughter and herself to be an honor, from which she could not part `` without still more pain ''.

After Thompson came to London to live, he received a letter from Katie, which was dated February 8, 1897.

The `` orphaned poems '' mentioned in the letter to Meynell comprised a group of five sonnets, which were published in the 1913 edition of Thompson's works under the heading `` Ad Amicam '', plus certain other completed pieces and rough drafts gathered together in one of the familiar exercise books.

On April 11th he wrote an open letter in The Advocate, making it known `` to the world that Jas. W. Robinson is by his own admission a base liar and a slanderer ''.

And Pike never did find out if Robinson was really responsible for the `` Vale '' letter.