caption: Distance in the Set of Real Numbers
exif: {"Image DocumentName": "Distance in the Set of Real Numbers", "Image ImageDescription": "Definition. Triangle Inequality. Triangle inequality for the absolute value is almost obvious. We have equality on the right hand side if x and y are either both positive or both negative (or one of them is 0). We have equality on the left hand side if the signs of x and y are opposite (or if one of them is 0). Definition. The distance between two real numbers x and y is |x-y|. Mika Sepp\u00e4l\u00e4: Sup and Inf.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}