Icedecimal sequence - from ICD-10 and decimal (associated with 10). Geometric sequences: descending 84, 42, 21 and ascending 21, 42, 84. Reference to combination of F84.5 (Asperger syndrome), F42.2 (mixed obsessive-compulsive disorder), F21 (schizotypal disorder) which I received first time 28.04.2015. In Polish icedecimal might be superficially translated as "lodowodziesiątkowy" czy "lodowodziesiętny" ("ice" - "lód" in Polish, adverb "lodowo". "decimal" - "dziesiątkowy", "dziesiętny"), so "icedecimal sequence" would mean "ciąg lodowodziesiątkowy". Terms of icedecimal sequence, first digits of its terms, second digits of its terms, numbers formed by swapping digits of this sequence, sums of digits in its terms, differences of digits in its terms, products of digits in its terms and quotients of digits in its terms all eight form geometric sequences with all terms being positive natural numbers (84, 42, 21; 8, 4, 2; 4, 2, 1; 48, 24, 21; 12, 6, 3; 4, 2, 1; 2, 8, 32; 2, 2, 2), the last sequence is constant and arithmetic also.
Nulicja - translation of the word "nullity" (a concept in transreal arithmetic denoted by Φ, or similarly in wheel theory denoted by ⊥) to Polish.