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On the basis of geological evidence, it is often stated that the early martian climate was warm enough for liquid water to flow on the surface thanks to the greenhouse effect of a thick atmosphere. We present 3D global climate simulations of the early martian climate performed assuming a faint young Sun and a CO 2 atmosphere with surface pressure between(More)
Static analysis of a computer program by abstract interpretation helps prove behavioural properties of the program. Programs are defined by means of a forward collecting semantics function relating the values of the program variables during the execution of the program. The least fixed point of the semantics function is a program invariants providing useful(More)
Verifying that a piece of software has no bugs means proving that it has certain desired properties, such as an array index not taking values outside certain bounds. Abstract interpretation is used in the static analysis of code to establish the inclusion-wise smallest set of values (numerical invariant) that the program variables can attain during program(More)
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