Fragmentation, in the context of mobile applications, is the inability to "write once and run anywhere". Fragmentation increases the effort required in all aspects of application development. This paper analyzes various aspects of fragmentation, and presents a taxonomy of techniques used to combat such fragmentation. Our aim is to establish a set of useful terminology for the benefit of researc...

Software systems often share common vulnerabilities that allow a single attack to compromise large numbers of machines (write once, exploit everywhere). Borrowing from biology, several researchers have proposed the introduction of artificial diversity in systems as a means for countering this phenomenon. The introduced differences affect the way code is constructed or executed, but retain the f...

In this work we analyze the multiply-exponential complexity classes for writeonce Turing machines, i.e. machines that can write to a given tape cell at most once. We show that k–DExpWOSpace = k–DExpWOTime = k–ExpTime and the nondeterministic counterpart. For alternating machines we show that k–AExpWOTime = k–AExpTime = k-1–ExpSpace.