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It is indeed a toy case, and the suggestion that this should be made clear is a good one. Its value to the non-expert is precisely that, as a toy, it is an example giving a flavour of the scheme in terms of mathematical concepts at a level that could be understood by an undergraduate. Another
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you copied and pasted material from one article into another. The problem with this edit is that it is not relevant to the stub and the material is completely out of context in this article. You are unwittingly using the notation of Hopf algebras but don't seem to have a clue that you're doing
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a small amount of material from a long, detailed and very expert article (largely written by
Mathsci). The homomorphisms in question are indeed Hopf algebra homomorphisms but this is not relevant, and i
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Why are you adding unsourced material and unexplained notation to an article? The normal way is to find the material in a book, e.g. Collins' Renormalization, paraphrase it and then cite it.
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why did you paste material on renormalization in the toy case of rooted trees rather than the usual setting of
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You don't have the slightest clue what you are writing and I suppose soon will receive a fairly lengthy block.
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reason for its selection is that this is, so far, the only example of an MSS currently present in
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on
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An example of the minimal subtraction scheme may be found in the formalism associated to the
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I trust that explains everything and that there is now consensus to restore the section.
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Copy-and-paste is not in itself a bad thing. However. In this particular case I
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that phrase, since the renormalisation rule applies entirely to the image space
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487:{\displaystyle \displaystyle R(\sum _{n}a_{n}z^{n})=\sum _{n<0}a_{n}z^{n}.}
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In this context the minimal subtraction scheme may be expressed as taking the
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I have added what I believe to be a correct abstract of the material at
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These are very reasonable questions which I propose to address here.
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the comment that renormalisation is the principal part operation.
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I attempted to add the following text as new section "Example":
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are given by a homomorphism taking values in the algebra
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350:{\displaystyle R(fg)+R(f)R(g)=R(fR(g))+R(R(f)g)}
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