ⵙⵎⵓⵏⵏ ⵢⵉⵔⵉⵎⵏ ⵏ ⵓⵙⵏⵎⴰⵍⴰ ⵏ ⵓⵙⵙⵓⴷⵙ, ⵉⵔⵉⵎ ⵏ “ⵡⴰⵢⵔⵙⵜⵔⵉⵙ ⵎ Weierstrass' M-tes”, ⴷ ⵢⵉⵔⵉⵎ ⵏ ⵓⵙⵏⵎⴰⵍⴰ ⴰⵎⵢⵉⵡⵏ ⵉⵣⵍⵉⵏ ⵙ “ⴰⴱⵉⵍ Abel's” ⴷ “ ⴷⵉⵏⵉ Dini's” ⴷ ⴰⵏⴰⵡⴰⵢ “ⴽⵓⵛⵉ Cauchy ”.