As a rule of notation, we reserve subscripts for internal configuration parameters (replication degree, intrusion threshold, rejuvenation parameters) and superscripts for external parameters (attack intensity and type).
In Eq. (1) and hereafter, summation rules for subscripts are used for simplicity of notation.
Since Frege's notation for rules of inference will play no role in the discussion that follows, we shall again simplify our task by abstaining from describing it further.
For arithmetic operators, this follows the rule of reverse Polish notation.
Russell took up Frege's logic, but used the notation and formal rules of proof of Peano, in a paper of 1906 with the title "The theory of implication".
Hence, with slight abuse of notation, we write (mu ={mu _{t}}_{tin mathbb {T}}) and call it an update rule as well.
It also helps you understand the system of notation.
Phonetic symbols play an important role in both types of notation, while graphic signs contribute mainly to representational notations.
URN contains two kinds of notation.
