Free theorems and parametricity [closed] - math

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I've found this webapp which lets you generate a free theorem for a given type.
The generated theorems quantify over types and relations on these types. These theorems (formulas) are theorems of which theory/logical system? How does this system relate to the equational theory of the language?

See the paper that introduced it all.
http://ttic.uchicago.edu/~dreyer/course/papers/wadler.pdf

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SAP Table Relationship [closed]

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With this relationship
a)If I want to make a detailed query of materials with the stock by Lots in b)the centers and warehouses, which tables should I use?
If I must add value information to the previous query, what table should I add?
Mark with an X the tables that you consider in each question
Is something wrong?
Thanks for helping!

what are the notations used for Software highlevel design? [closed]

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i have been given to design software.i have designed the overall process using box and arrow notation .i want to know for high level design of software is there any specific notation to follow.
One of the most commonly used notations is UML or Unified Modelling Language.

Lambda Calculus simplification [closed]

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Below is the lambda expression which I am finding difficult to reduce i.e. I am not able to understand how to go about this problem.
(λmn(λsz.ms(nsz)))(λsz.sz)(λsz.sz)
I am lost with this.
if anyone could lead me in the right direction that would be much appreciated

Simple introduction to linear models in R - [closed]

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It was hard for me to understand linear models in R. There are a lot of documents for the case, but many of them are technical manuals rather than teaching the concept.
I found this article really simple and instructive, I hope it would be useful for the other people who have the same problem.
Do you have any better suggestion?
You can check here or Linear Mixed Model, its also simple and easy to understand.

Is there free website which can insert handwritten math formulae? [closed]

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MathType http://www.dessci.com/v/prod/mtw/6/mtow/mthome can insert handwritten math formulae.
Is there free website which can insert handwritten math formulae?
You should check out the Infty Project. There seems to be a free version that you might be able to make use of.
There is also some additional discussion on this topic at: OCR lib for math formulas

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