Imbali yeKansai Plascon iqale kwizitalato zaseJohannesburg, eMzantsi Afrika. Ngo-1889, indoda enamabhongo yaseWales entetho isisiWelsh, egama linguHerbert Evans iye yavula iingcango zevenkile ethengisa ipeyinti. Ishishini liye lenyuka ngenxa yokuqaliswa kweshishini lokwakha elidale amathuba okuba i-Evans ibuye ibe lishishini elivelisa ipeyinti. Ngo-1891, iHerbert Evans (ubunini) Limited yaba ligama eliqhelekileyo ngenxa yemveliso eqalisa izinto ezintsha ezifana “neepeyinti esele zixutyiwe” kunye nevanishi “Engcono engaqinanga”.

3 * 4 = 12 (ukuphinda-phinda akutshintsi ziphumo nokokuba kuqalwe ngaliphi na inani, umzekelo: isiphumo esivela ku 3 * 4 siyafana nesiphumo esivela ku 4 * 3)

U-William Wellington wakwaGqoba wazalwa ngo-August ka-1840, ezalelwa eGaba kufuphi naseMpuma-Koloni (eEastern Cape). Uyise wayenguGqoba uCirha. Uyisemkhulu yena wayenguPeyi, indoda eyayingumlandeli nomhlobo omkhulu kaNtsikana. Uyakukhumbula kaloku okokuba uNtsikana wadlala indima enkulu nebonakalayo kwimbali yesiXhosa, nakudliwano-ndlebe olwalubanjwa rhoqo ngamaXhosa olwalungalunga nobuKristu.

Akusiyiyo yonke imithi enala malungu omzimba akhankanywe apha ngasentla. Umzekelo, imithi emininzi ye-palm ayinamasebe, isaguaro cactus zaseMantla eMelika azinamagqabi asebenzayo, umthi wee-''fern'' ayivelisi maxolo arhabaxa, njalo njalo. Xa sijonga ukumila nobukhulu bayo, zonke ezi zityalo zithahwa nje ngemithi xa zizonke. Imithi yahluka-hlukene kakhulu. Isityalo esikumila kunje sifana nqwa nomthi, kodwa sibe sona isisityalo esincinane, esineziqu ezininzi kunye/okanye namasebe akhulela kufuphi nomhlaba, kuthiwa lityholo (okanye inkanga). Nangona oku kuyinyaniso, akukho mahluko ucacileyo phakathi kwamatyholo ne,ithi. Sijonge ubuncinane baso esi sityalo, ibonsai izityalo bezingenakuba 'yimithi', kodwa ke masingabhidanisi indlela ezimile ngayo izinto kunye nobukhulu bazo. Imbewu ye-spruce alingeni ncam kwindlela ochazwa ngayo umthi, kodwa zonke ii-spruces ziyimithi.

Ii-integers ngawo onke amanani a-natural. Khumbula ke okokuba amanani a-natural ngala sihlala sibala ngawo imihla nezolo, sisithi 1,2,3, njalo njalo. Onke ke amanye amanani anje kwelinye icala lomgca manani anje ngala -1, -2, -3, njalo njalo; kwanenani elingu-zero. Akazizo ii-intergers. Kanti nawo amanani a-decimal, oko kukuthi ii-decimal numbers kunye neefractions akazo-intergers.

Wenza uThixo izikhanyiso ezikhulu zazibini, esona sikhulu isikhanyiso ukuba silawule imini, esona sincinane isikhanyiso ukuba silawule ubusuku; wenza neenkwenkwezi.

Ii-Complex numbers ziluhlobo oluquka onke amanani. Ii-complex numbers zingabhalwa kwi-number plane. Le ke yenziwe ngee-real number line, kunye ne-imaginary number line.

Umthi sisityalo esikhula sibe sinesiqu kunye namasebe aso zonke zenziwe ngokhuni. Ungaphila iminyaka emininzi. Mane amalungu omthi nanga:ziingcambu, ypali, ngamasebe, kunye namagqabi.