We investigate the reversibility of laser filamentation, a self-sustained, non-linear propagation regime including dissipation and time-retarded effects. We show that even losses related to ionization marginally affect the possibility of reverse propagating ultrashort pulses back to the initial conditions, although they make it prone to finite-distance blow-up susceptible to prevent backward pr...

We prove that the chordal SLEκ trace is reversible for κ ∈ (0, 4].

Reversibility enables a program to be executed both forwards and backwards. This ability allows programmers backtrack the execution previous state. is essential if computation not deterministic because re-running may lead that state of interest. sequential programs has been well studied strong theoretical basis exists. Contrarily, reversibility concurrent still very young, especially in practic...

The usual general-purpose computing automaton (e.g.. a Turing machine) is logically irreversibleits transition function lacks a single-valued inverse. Here i t is shown that such machines may he made logically reversible at every step, while retainillg their simplicity and their ability to do general computations. This result is of great physical interest because it makes plausible the existenc...

A patient with alcoholic cardiomyopathy is described in whom cardiovascular function capacity and radiological heart size fluctuated widely with periods of heavy drinking and abstinence. On two occasions, cessation of drinking resulted in clinical recovery from severe degrees of congestive failure and in complete reversal of cardiac enlargement. Echocardiographic follow-up showed, however, that...

1. The thermodynamic description, which includes the principle that the entropy S of a thermally isolated system never decreases with time : if t1 < t2 then S(t1) ≤ S(t2) (1) 2. Macroscopic descriptions, such as the heat equation ∂e/∂t = K∇T (2) 3. Descriptions by kinetic equations such as Boltzmann’s equation ∂f/∂t+ v · ∇xf = I(f) (3) where I(f) is an integral expression representing the effec...

Although theoretically attractive, the reversibility of resistance has proven difficult in practice, even though antibiotic resistance mechanisms induce a fitness cost to the bacterium. Associated resistance to other antibiotics and compensatory mutations seem to ameliorate the effect of antibiotic interventions in the community. In this paper the current understanding of the concepts of revers...

The phenomenon of disagreement has recently been brought into focus by the debate between contextualists and relativist invariantists about epistemic expressions such as ‘might’, ‘probably ’, indicative conditionals, and the deontic ‘ought’. Against the orthodox contextualist view, it has been argued that an invariantist account can better explain apparent disagreements across contexts by appea...

Today’s computers are based on irreversible logic devices, which have been known to be fundamentally energy-inefficient for several decades. Recently, alternative reversible logic technologies have improved rapidly, and are now becoming practical. In traditional models of computation, pure reversibility seems to decrease overall computational efficiency; I provide a proof to this effect. Howeve...