👉 The term "indicial" in mathematics refers to a specific type of function that is defined by a recurrence relation. In other words, it's like a special rule or formula for a sequence of numbers where each number after the first is calculated based on the previous two. Here's an example: consider the Fibonacci sequence, which is defined recursively as follows: F(n) = F(n-1) + F(n-2) where n is the nth term in the sequence. This function has