Explore Number Theory and Geometry with Mathematics Problem Explorer Book

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Hi friends, A new math book by name "Mathematics Problem Explorer" has come. It contains many problems in Number Theory, Plane geometry n algebre. It rox...For further discussions on Number Theory and Mathematics..mail to rahulchakravarthy_iitm@yahoo.com
 
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Hai Rahul sent more information about publishors and author of this book.
 
Sorry to ask Rahul, but are you on the revleft and rebelalliance forums by any chance? We do have a certain rahul from India...
 
Thread 'Derivation of equations of stress tensor transformation'
Hello ! I derived equations of stress tensor 2D transformation. Some details: I have plane ABCD in two cases (see top on the pic) and I know tensor components for case 1 only. Only plane ABCD rotate in two cases (top of the picture) but not coordinate system. Coordinate system rotates only on the bottom of picture. I want to obtain expression that connects tensor for case 1 and tensor for case 2. My attempt: Are these equations correct? Is there more easier expression for stress tensor...
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