Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Dutch architect & Benedictine monk Dom Hans van der Laan nyere aha plastic nọmba (Dutch: het plastische getal) na nọmba a na 1928. N'afọ 1924, afọ anọ tupu van der Laan enye aha nọmba ahụ, injinia France bụ Gérard Cordonnier achọpụtalarị nọmba ahụ ma kpọọ ya nọmba radiant (French: le nombre radiant). N'adịghị ka aha nke ọla edo na ọlaọcha, okwu van der Laan ebughị n'uche ka ọ na-ezo aka na ihe a kapịrị ọnụ, kama ọ bụ n'echiche ya, nke pụtara ihe nwere ike inye ya ụdị atọ. Nke a, dị ka Richard Padovan si kwuo, bụ n'ihi na ihe e ji mara ọnụ ọgụgụ ahụ, 3/4 na 1/7, metụtara ókè nghọta mmadụ nwere n'ịtụnyere otu akụkụ ahụ n'akụkụ nke ọzọ. Van der Laan haziri ụlọ ụka St. Benedictusberg Abbey na 1967 ka ọ bụrụ ọnụ ọgụgụ plastik ndị a. A na-akpọkwa nọmba plastik mgbe ụfọdụ nọmba ọlaọcha, aha nke Midhat J. Gazalé nyere ya na nke Martin Gardner mechara jiri ya, mana aha ahụ ka a na-ejikarị maka ọlaọcha ọlaọcha 1 + √2, otu n'ime ọnụọgụ sitere na ezinụlọ nke ọla kọpa nke Vera W. de Spinadel kọwara na 1998.  Ajụjụ: Ònye nyere plastik aha ya
Dom Hans van der Laan