I te itinga rawa o te pāpāho whakahaurangi, ko te tairitenga de facto 21 century o ngā raruraru o Hilbert, ko te rārangi o ngā Raruraru Whakawhiwhinga Arikiona e whitu i kōwhiria i te wā o te 2000 e te Kura Pāngarau Clay.