1. What is modal logic?
2. Explain frames. Give one example.
ANSWERS:-
//Before I begin, since the depths of the solution is not mentioned, I will give only an introductory answer. In case you need in-depth analysis, PLEASE COMMENT!
1.
Modal logic is a type of formal logic that extends classical propositional and predicate logic to include operators expressing modality. Modality refers to a statement in general. Let me give you an example.
Take a statement like "Michael is angry". Now, this statement may be qualified by saying that Michael is usually angry. Hence the term 'usually' serves as a modal here.
Modal logic requires terms called Modal operators, which are basically logical connectives used to form propositions.
2.
//I assume by frames here, you mean in the context of Web Development. The example is included in the main answer.
A frame is basically part of a web page which has the capacity of loading its content independent of its own container.
There are certain advantages of using frames in our webpage. The first being, it simplifies management of content shared across all or most of the pages of our website. Secondly, since we do not always need to re-load parts of frames not changed, it massively reduces our bandwidth requirements. Lastly, we can view several independent pieces of information side-by-side, being able to scroll through each of them independently. For example, independently scrolling page of text next to video, images, animation, 3D rotating objects, etc.
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