28 Converting sentences to clausal form Skolem constants and functions 5. Eliminate existential quantification by introducing Skolem constants/functio
{"Image DocumentName": "Converting sentences to clausal form Skolem constants and functions", "Image ImageDescription": "5. Eliminate existential quantification by introducing Skolem constants/functions. (\uf024x)P(x) \uf0de P(c) c is a Skolem constant (a brand-new constant symbol that is not used in any other sentence) (\uf022x)(\uf024y)P(x,y) \uf0de (\uf022x)P(x, f(x)) since \uf024 is within the scope of a universally quantified variable, use a Skolem function f to construct a new value that depends on the universally quantified variable. f must be a brand-new function name not occurring in any other sentence in the KB. E.g., (\uf022x)(\uf024y)loves(x,y) \uf0de (\uf022x)loves(x,f(x)) In this case, f(x) specifies the person that x loves.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}