![Substitution systems [and digit sequences]](/nks/img/thumbnails/notes-4-2--substitution-systems-and-digit-sequences--textonly.png "Substitution systems [and digit sequences]")
![Leading digits [in numbers]](/nks/img/thumbnails/notes-4-2--leading-digits-in-numbers--textonly.png "Leading digits [in numbers]")
![General powers [of numbers]](/nks/img/thumbnails/notes-4-2--general-powers-of-numbers--textonly.png "General powers [of numbers]")
![Relation [of powers] to substitution systems](/nks/img/thumbnails/notes-4-2--relation-of-powers-to-substitution-systems--textonly.png "Relation [of powers] to substitution systems")
![Implementation [of 3/2 system]](/nks/img/thumbnails/notes-4-2--implementation-of-32-system--textonly.png "Implementation [of 3/2 system]")
![Reconstructing initial conditions [in the 3n+1 problems]](/nks/img/thumbnails/notes-4-2--reconstructing-initial-conditions-in-the-3n1-problems--textonly.png "Reconstructing initial conditions [in the 3n+1 problems]")
![A reversible [3n+1 problem] system](/nks/img/thumbnails/notes-4-2--a-reversible-3n1-problem-system--textonly.png "A reversible [3n+1 problem] system")
![History [of reversal-addition systems]](/nks/img/thumbnails/notes-4-2--history-of-reversal-addition-systems--textonly.png "History [of reversal-addition systems]")
Substitution systems [and digit sequences]
Multiplicative digit sequences
Multiples of irrational numbers
Relation [of powers] to substitution systems
Other uniformly distributed sequences
Implementation [of 3/2 system]
Reconstructing initial conditions [in the 3n+1 problems]
A reversible [3n+1 problem] system