The Information Properties of Reversible Pathways

A pathway is realized by work and heat exchanges, and the tuning of state variables. The actions are programmed in parallel and coordinated with the surroundings. Viewing pathway information as something separate is idealized. The perspective is valuable nonetheless in the way that computational programs 

The first is that individual states differ from pathways in that states offer almost zero information in the statistical sense. For an equilibrium system of appreciable size and particle number  

This is on account of the minor effects of fluctuations. By contrast, pathways offer appreciable information in abundant variables. 

The fourth property lies in the contrasts between ideal and nonideal gases. The former demonstrate several properties beginning with the ideal gas law. An ideal gas further expresses Cy and independently of temperamre. For an ideal gas, the dependence of U and H is only on n and T and not at aU on F For an ideal gas, the response functions have elementary forms = T and Pj. = /r. A nonideal gas 

FIGURE 4.16 for A and B of previous figures. The temperature bias is greater for 

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