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See also:NUMERAL (from See also:Lat. numerus, a number) , a figure used to represent a number . The use of visible signs to represent See also:numbers and aid reckoning is not only older than See also:writing, but older than the development of numerical See also:language on the denary See also:system; we See also:count by tens because our ancestors counted on their fingers and named numbers accordingly . So used, the fingers are really numerals, that is, visible numerical signs; and in antiquity the practice of counting by these natural signs prevailed in all classes of society . In the later times of antiquity the See also:finger symbols were See also:developed into a system capable of expressing all numbers below 10,000 . The See also:left See also:hand was held up See also:flat with the fingers together . The See also:units from r to 9 were expressed by various positions of the third, See also:fourth, and fifth fingers alone, one or more of these being either closed on the See also:palm or simply See also:bent at the See also:middle See also:joint, according to the number meant . The thumb and See also:index were thus left See also:free to See also:express the tens by a variety of relative positions, e.g. for 30 their points were brought together and stretched forward; for 50 the thumb was bent like the See also:Greek P and brought against the See also:ball of the index . The same set of signs if executed with the thumb and index of the right hand meant hundreds instead of tens, and the unit signs if performed on the right hand meant thousands.' The fingers serve to express numbers, but to make a permanent See also:note of numbers some See also:kind of See also:mark or See also:tally is needed . A single stroke is the obvious See also:representation of unity; higher numbers are indicated by See also:groups of strokes . But when the strokes become many they are confusing, and so a new sign i The system is described by Nicolaus Rhabda of See also:Smyrna (8th See also:century A.D.), ap . N . Caussinus, De eloquentia sacra et humana (See also:Paris, 1636) . The See also:Venerable See also:Bede gives essentially the same system, and it See also:long survived in the See also:East; see especially Rodiger, " Uber See also:die See also:im Orient gebrauchliche Fingersprache, &c.," D.M.G . (1845), and See also:Palmer in Journ. of See also:Philology, ii . 247 sqq . See also:NUMERAL must be introduced, perhaps for 5, at any See also:rate for to, roo, torso, and so forth . Intermediate numbers are expressed by the addition of symbols, as in the See also:Roman system ccxxxvi= 236 . This simplest way of writing numbers is well seen in the Babylonian See also:inscriptions, where all numbers from t to 99 are got by repetition of the See also:vertical arrowhead T =I, and a barbed sign = to . But the most interesting See also:case is the See also:Egyptian, because from its See also:hieratic See also:form sprang the Phoenician numerals, and from them in turn those of See also:Palmyra and the Syrians, as illustrated in table 1 . Two things are to be noted in this table—first, the way in which groups of units come to be joined by a See also:cross See also:line, and then run together into a single See also:symbol, and, further, the substitution in the hundreds of a principle of multiplication for the See also:mere addition of symbols . The same thing appears in Babylonia, where a smaller number put to the right of the sign for too (T-) is to be added to it, but put to the left gives the number of hundreds . Thus (I-=loco, but T-<=tro . The Egyptians had See also:hieroglyphics for a thousand, a myriad, roo,000 (a See also:frog), a million (a See also:man with arms stretched out in admiration), and even for ten millions . Alphabetic writing did not do away with the use of numerical symbols, which were more perspicuous, and compendious than words written at length . But the letters of the See also:alphabet them-selves came to be used as numerals . One way of doing this was to use the initial See also:letter of the name of a number as its sign . This was the old Greek notation, said to go back to the See also:time of See also:Solon. and usually named after the grammarian Herodian, who described it about A.D . 200 . I stood for t, II for 5, A for ro, H for too, X for moo, and M for 10,000; II with A in its bosom was 50, with H in its bosom it was 500 . Another way See also:common to the Greeks, See also:Hebrews, and Syrians, and which in See also:Greece gradually See also:Syriac . Palmyrene . Phoenician . Hieratic . Hieroglyphic . ! I 1 I Il 1 ! rl /u III ti "1 In 3 rr /1/I 111 4'41 01 1111 4 II111 '.I II 111 5 l5 111111 t III III 6 I1lJ 'I!lIII 1111111 7 rt~- 1112 II III III Gi 4 1111 1111 8 rr- /111':3 111111111 Z 111 1111n 9 7 -7 n I0 7 1--p 1—7 IA In II rr-'-j 111111111—7 111!IIUIn I 19 0 nn 20 10 lZ \z,A See also:Inn 21 70 --'8 nnn 30 00 33 yy nnnn 40 700 -253 -7&y nnnnn 50 000 333 4/yti nnnnnn 6o 7000 '7333 nnn nnnn 70 0000 3333 bh'H1/ nnnn nnnn 8o 70000 —PS 33`3 -'HHHH A Mn nnn nnn 90 —pr ~pl lol ~l 9 See also:I00 'Tr ~1I al.) 1011 99 200 l'1 See also:Ili 999 300 displaced the Herodian numbers, was to make the first nine letters stand for the units and the See also:rest for the tens and hundreds . With the old Semitic alphabet of 22 letters this system See also:broke down at n=400, and the higher hundreds had to be got by juxtaposition; but when the See also:Hebrew square See also:character got the distinct final forms .1,: ^, 7,'i, r these served for the hundreds from 500 to 900 . The Greeks with their larger alphabet. required but three supplemental signs, which they got by keeping for this purpose two old Phoenician letters which were not used in writing (F or ss= =6, and -me= 9o), and by adding sampian for goo i Among the Greeks the first certain use of this system seems to be on coins of See also:Ptolemy II . The first trace of it on Semitic ground is an Jewish coins of the I asmoneans . It is,the See also:foundation of geniatria as we find it in Jewish See also:book and in the apocalyptic number of the beast (10P rhl= 666) . But we do not know how old gematriais; the name is borrowed from the Greek . The most See also:familiar case of the use of letters as numerals is the Roman system . Here C is the initial of centum and Mof mille; but instead of these signs we find older forms, consisting of a circle divided vertically for :r000 and horizontally, e, or in the cognate See also:Etruscan system divided intos quadrants, ED, for roo . From the sign for r000, still sometimes roughly shown in See also:print as cIo; comes D; the See also:half of the symbol for half the number; and the older forms of L, viz . .1 or .L, suggest that this also was once half of the See also:hundred symbol . So V (Etruscan n) is half of X, which itself is not a true Roman letter . The system„ therefore, is hardly alphabetic in origin, though the See also:idea has been thrown out that the signs for ro, 50, and too were originally the Greek X, SY, 43, which were not used in writing Latin ? When. high numbers had to be expressed systems such as we have described became very cumbrous, and in alphabetic systems it became inevitable to introduce a principle of periodicity by which, for example, the signs for 1, 2, 31 &c., might be used with a difference to express the same pumber of thousands . Language itself suggested this principle, and so we find in Hebrew a or in Greek ,a = Iwo . So further f3Mu, OM., or simply 16 . = 20,000 . (2 myriads) . If now the larger were always written to the left of the smaller elements of a number the diacritic mark could be dispensed with in such a case as,6coha (instead of „6mha) = 2831, for here it was See also:plain that (3 =2000, not 2, since otherwise it would not have preceded to= Soo . We have here the germ of the very important notion that the value of a symbol may be periodic and defined by its position . The same idea ' had appeared much earlier among the Babylonians, who reckoned by See also:powers of 6o, calling 6o a loss and 6o sixties a See also:sari On the tablets of Senkerah a See also:list of squares and cubes is given on this principle, and here the square of 59 is written 58•I—that is, 58X6o+l; and the. See also:cube of 3o is 73o--that is, 7 sar+3o See also:Boss =7 X 662+30 X'6o . Here again we have value by position; but, as there is no zero, it is`left to' the See also:judgment of the reader to know which See also:power of 6o is meant in each case . The sexegesimal system, long specially associated with See also:astronomy, has left a trace in our See also:division of the See also:hour and of the circle, but as language goes by powers of 10 it is practically very inconvenient for most purposes of reckoning . The Greek mathematicians used a sort of decimal system; thus See also:Archimedes was able to solve his problem of stating a. number greater than that of the grains of See also:sand which would fill the See also:sphere of the fixed stars by dividing numbers into octades, the unit of the second octade being rob and of the third Io16 . So too See also:Apollonius of See also:Perga teaches multiplication by regarding 7 as the iruBµ$v or 70, 700 and so forth . One must then find successively the product of the several pythmens of the multiplier and the multiplicand, noticing in each case what are tens, what hundreds, and so on, and adding the results . The want of a sign for zero made it impossible mechanically to distinguish the tens, hundreds, &c., as we 'now do . I The See also:Arabs, who quite changed the See also:order of the alphabet and extended it to twenty-eight letters, kept the See also:original values of the old letters (putting ee for o and cy for ,m,), while the hundreds from 500 to loon were expressed by the new letters in order from v tot .. In the time of See also:Caliph Walid (A.n . 705-715) the Arabs had as yet no signs of numeration . 2 See further See also:Fabretti, Paldoga•aphisahe Stiadien . Very See also:early, however, a See also:mechanical contrivance, the See also:abacus; had beep: introduced for keeping numbers oftdifferent dendminatlons apart . This was a table with compartments or colum s' for counters, each See also:column representing a different value to be given to a See also:counter placed on it . This might be used either for See also:concrete See also:arithmetic—say with columns for pence, shlfliii,Fs and pounds; or for abstract reckoning—say with the Ba yIc4ran, secagesimal system . An old Greek abacus found at Salamise has, columns which, taken from right to' left, give a counter the value:.of r, 10, 100, See also:I000 drachms, and finally of 1 See also:talent (6000drachms) respectively . An abacus on the decimal system might be ruled on.. See also:paper or on a. See also:board strewed with See also:fine sand, and was 'then a first step to the decimal; system . Two important steps, however, were still lacking: the' first was to use instead of counters distinctive marks (ciphers) for the digits from one to nine; the second and more important was to get a sign for zero, so that the colurnns might be dispensed with, and the See also:denomination of each See also:cipher seen at once by counting the number of digits following These two steps taken, we have at once the See also:modern so-called Arabic numerals and the possibility of modern arithmetic; but the invention of the ciphers and. zero came but slowly, and their See also:history is a most obscure problem . What is quite certain is that our See also:present decimal system, in its See also:complete form, with the zero. which enables us to do without the ruled columns of the abacus, is of See also:Indian origin . From the See also:Indians it passed to 'the Arabians, probably along with the astronomical tables brought to See also:Bagdad by an Indian See also:ambassador in 773 A.D . At all events the system was explained in Arabic in the early See also:part of the 9th century by the famous See also:Abu Ja'far Mohammed b . Musa al-Khwarizmi (Hovarezmi), and from that time continued to spread, though at first slowly, through the Arabian See also:world . In See also:Europe the complete system with the zero was derived from the Arabs in the 12th century, and the arithmetic based an this system was known by the name of algoritmus, algorithm, algorism . This barbarous word is nothing more than a transcriptionof Al-Khwarizmi, as was conjectured by See also:Reinaud, and has become plain since the publication of a unique See also:Cambridge MS. containing a Latin See also:translation—perhaps by Adelhard of See also:Bath-of the lost arithmetical See also:treatise of the Arabian mathematician.' The arithmetical methods of Khwarizmi were simplified by later Eastern writers, and these simpler methods were introduced to Europe by Leonardo of See also:Pisa in the See also:West and See also:Maximus See also:Planudes in the East . The.See also:term zero appears to come from the Arabic sifr through the form •zephyro used by Leonardo . Thus farmodern inquirersare agreed . The disputed points are—(I) the origin and See also:age of the Indian system, and (2) whether or not a less developed Indian system, without the zero' but with the nine other ciphers used on an abacus, entered Europe' before the rise of See also:Islam, and prepared the. way for a complete decimal flotation . — * h Ghobar8 Boetius5 .' T V ? L _ 8 r . The use of nuiiietals in See also:India can be followed See also:beck to the Nana See also:Ghat inscription's, supposed to date from the early part of the 3rd century B.C . These are signs for units, tens and hundreds, as 3 Published by Boncompagni in Trattati d' aritmetica (See also:Rome, 1857) . 4 From See also:Sir E . C . Bayley's paper in J.RL4 Si (18'$2): 6 From See also:Burnell's .. ozyth Indian •Palaeogrophy(1874) . 6 Of the loth century . (From Burnell, op. See also:cat) ' Of "the loth century; from 'a MS. written at See also:Shiraz . (From Woepcke Memoire See also:sue la See also:propagation See also:des ehiff,e§ indieni.) "From a MS. at Paris . . (From Woepcke, 4. tit.) 9 See also:Erlangen (See also:Altdorf)MS . (From Woepcke, op. cit.) Nana Ghat (Indian See also:Cave Inscriptions (Indian) 5 See also:Deva a'garis Eastern Arabic' . 1 ` in the other old systems we have dealt with . Like the Indian alphabet, they are probably derived from abroad, but, as in the case of the alphabet, their origin is obscure . The forms of the later Indian numerals for the nine digits appear to be clearly derived from the earlier system . In table II. the first two lines give forms earlier than the introduction of the system of position, while the Devanagari in the third line was used with a zero and position value . The " cave " numerals were employed during the first centuries of the See also:Christian era . The earliest known example of a date written on the modern system is of A.D . 738, while the old system is found in use as See also:late as the early part of the 7th century (Bayley) . On the other hand, there is some See also:evidence that a system of value by position was known to See also:Sanskrit writers on arithmetic in the 6th Christian century . These writers, however, do not use ciphers, but symbolical words and letters, so that it is not quite clear whether they refer to a system which had a zero, or to a system worked on an abacus, where the zero is represented by a See also:blank column . There is no See also:proof as yet for the use of any system of position in India before tip 6th century, and nothing beyond conjecture can be offered as to its origin . 2 . In Europe, before the introduction of the algorithm or full Indo-Arabic system with the zero, we find a transition system in which calculations were made on the decimal system with an abacus, but instead of unit counters there were placed in the columns ciphers, with values from one to nine, and of forms that are at bottom the Indian forms and agree most nearly with the numerals used by the Arabs of See also:Africa and See also:Spain . For among the Arabs themselves there were varieties in the forms of the Indian numeral, and in particular an eastern and a western type . The latter is called ghobar (dust), a name which seems to connect it with the use of a sand-spread tablet for calculation . The abacus with ciphers instead of counters was used at Rheims about 970–980 by See also:Gerbert, who after-wards was See also:pope under the See also:title of See also:Sylvester II., and it became well known in the i 1th century . Where did Gerbert learn the use of the abacus with ciphers ?
There is no See also:direct evidence as to this, for the See also:story in See also: Friedlein, Die Zahlzeichen and das elementare Rechnen der Griechen and Romer, &c . (1869); F . Woepcke, Sur l'introduction de l'arithmetique indien en occident (Rome, 1859), and Memoire sur la propagation des chiffres indiens (Paris, 1863) . For the See also:palaeography of the Indian numerals see Burnell, Elements of S . Indian Palaeography (1874) ; and Sir E . C . Bayley in J.R.A.S . (1882, 1883) . For Boetius compare Friedlein's edition of his arithmetic and See also:geometry (Leipzig, 1857), and Weissenhorn in Zeitsch . Math . Plays. See also:xxiv . Other references to the copious literature will be found in Cantor and Friedlein, who also discuss the subject of the notation for fractions, which cannot be entered on here . For systems passed over here, see Pihan, Expose des signes de numeration usites chez See also:les peuples orienlaux (Paris, I86o) . (W . R . |
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