常用数学符号的英文用语

+plus加号；正号-minus减号；负号±plusorminus正负号×ismultipliedby乘号÷isdividedby除号＝isequalto等于号≠isnotequalto不等于号≡isequivalentto全等于号≌isequaltoorapproximatelyequalto等于或约等于号≈isapproximatelyequalto约等于号＜islessthan小于号＞ismorethan大于号isnotlessthan不小于号isnotmorethan不大于号≤islessthanorequalto小于或等于号≥ismorethanorequalto大于或等于号%percent百分之…‰permill千分之…∞infinity无限大号∝variesas与…成比例√(square)root平方根∵since;because因为∴hence所以∷equals,as(proportion)等于，成比例∠angle角⌒semicircle半圆⊙circle圆○circumference圆周πpi圆周率△triangle三角形⊥perpendicularto垂直于∪unionof并，合集∩intersectionof交，通集∫theintegralof…的积分∑(sigma)summationof总和°degree度′minute分″second秒℃Celsiussystem摄氏度{openbrace,opencurly左花括号}closebrace,closecurly右花括号(openparenthesis,openparen左圆括号)closeparenthesis,closeparen右圆括号()brackets/parentheses括号[openbracket左方括号]closebracket右方括号[]squarebrackets方括号.period,dot句号，点|verticalbar,verticalvirgule竖线&ampersand,and,reference,ref和，引用*asterisk,multiply,star,pointer星号，乘号，星，指针/slash,divide,oblique斜线，斜杠，除号//slash-slash,comment双斜线，注释符#pound井号\backslash,sometimesescape反斜线转义符，有时表示转义符或续行符~tilde波浪符.fullstop句号,comma逗号:colon冒号;semicolon分号?questionmark问号!exclamationmark(英式英语)exclamationpoint(美式英语)'apostrophe撇号-hyphen连字号--dash破折号...dots/ellipsis省略号singlequotationmarks单引号doublequotationmarks双引号‖parallel双线号～swungdash代字号§section;division分节号→arrow箭号；参见号1.Logic9thereexists8forallp)qpimpliesq/ifp,thenqp,qpifandonlyifq/pisequivalenttoq/pandqareequivalent2.Setsx2AxbelongstoA/xisanelement(oramember)ofAx=2AxdoesnotbelongtoA/xisnotanelement(oramember)ofAA?BAiscontainedinB/AisasubsetofBA?BAcontainsB/BisasubsetofAA\BAcapB/AmeetB/AintersectionBA[BAcupB/AjoinB/AunionBAnBAminusB/thedi?rencebetweenAandBA?BAcrossB/thecartesianproductofAandB3.Realnumbersx+1xplusonex?1xminusonex?1xplusorminusonexyxy/xmultipliedbyy(x?y)(x+y)xminusy,xplusyxyxovery=theequalssignx=5xequals5/xisequalto5x6=5x(is)notequalto51x?yxisequivalentto(oridenticalwith)yx6?yxisnotequivalentto(oridenticalwith)yxyxisgreaterthanyx=yxisgreaterthanorequaltoyxyxislessthanyx=yxislessthanorequaltoy0x1zeroislessthanxislessthan10?x?1zeroislessthanorequaltoxislessthanorequalto1jxjmodx/modulusxx^2xsquared/x(raised)tothepower2x^3xcubedx^4xtothefourth/xtothepowerfourx^nxtothenth/xtothepowernx☆xtothe(power)minusnpx(square)rootx/thesquarerootofx3pxcuberoot(of)x4pxfourthroot(of)xnpxnthroot(of)x(x+y)2xplusyallsquared厨y?xoveryallsquaredn!nfactorial^xxhat锅xbar~xxtildexixi/xsubscripti/xsu兵i/xsubinXi=1aithesumfromiequalsonetonai/thesumasirunsfrom1tonoftheai4.Linearalgebrakxkthenorm(ormodulus)ofx!OAOA/vectorOAOAOA/thelengthofthesegmentOAATAtranspose/thetransposeofAA?Ainverse/theinverseofA25.Functionsf(x)fx/fofx/thefunctionfofxf:S!TafunctionffromStoTx7!yxmapstoy/xissent(ormapped)toyf0(x)fprimex/fdashx/the(?st)derivativeoffwithrespecttoxf00(x)fdouble{primex/fdouble{dashx/thesecondderivativeoffwithrespecttoxf000(x)ftriple{primex/ftriple{dashx/thethirdderivativeoffwithrespecttoxf(4)(x)ffourx/thefourthderivativeoffwithrespecttox@f@x1thepartial(derivative)offwithrespecttox1@2f@x21thesecondpartial(derivative)offwithrespecttox1Z10theintegralfromzerotoin?itylimx!0thelimitasxapproacheszerolimx!+0thelimitasxapproacheszerofromabovelimx!?thelimitasxapproacheszerofrombelowlogeylogytothebasee/logtothebaseeofy/naturallog(of)ylnylogytothebasee/logtothebaseeofy/naturallog(of)yIndividualmathematiciansoftenhavetheirownwayofpronouncingmathematicalexpressionsandinmanycasesthereisnogenerallyaccepted\correctpronunciation.Distinctionsmadeinwritingareoftennotmadeexplicitinspeech;thusthesoundsfxmaybeinterpretedasanyof:fx,f(x),fx,FX,FX,!FX.Thedi?renceisusuallymadeclearbythecontext;itisonlywhenconfusionmayoccur,orwherehe/shewishestoemphasisethepoint,thatthemathematicianwillusethelongerforms:fmultipliedbyx,thefunctionfofx,fsubscriptx,lineFX,thelengthofthesegmentFX,vectorFX.Similarly,amathematicianisunlikelytomakeanydistinctioninspeech(exceptsometimesadi?renceinintonationorlengthofpauses)betweenpairssuchasthefollowing:x+(y+z)and(x+y)+zpax+bandpax+ban?1andan?