Retrieving "Phase Space Volume" from the archives

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1. Infinitesimal Parameter

   Linked via "phase space volumes"

   Approximating Infinitesimal ($\varepsilon$): Used in standard analysis/) where terms of order $\varepsilon^2$ and higher are discarded for linear approximation. This parameter strictly approaches zero ($\lim_{\varepsilon \to 0}$).
   Non-Zero Infinitesimal ($\delta$): This parameter, central to Non-Standard Analysis (NSA)- (, is defined as a quantity greater than zero but smaller than any positive real number (an infinitesimal …