o-Anisyl-m-oxytolyl-essigsäure-lacton

O-33: Serum Anti-M

O + + H 2 O „ + M ... \ H 5 O 2 + „ + M ...

مطالعه شونیت های کروماتی M M (Cro ) 6،H O M = NH ,Rb ,Cs ,…, M =Mg ,Ni ,…

O  M S-o T H

We compare classes of finite relational structures via monadic second-order transductions. More precisely, we study the preorder C ⊑ K : iff C ⊆ τ(K) for some transduction τ. If we only consider classes of incidence structures we can completely describe the resulting hierarchy. It is linear of order type ω + . Each level can be characterised in terms of a suitable variant of tree-width. Canoni...

Section M-Section O