𝔖 Bobbio Scriptorium
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A warning about the choice of primitive operators in modal logic

✍ Scribed by David Makinson

Publisher
Springer Netherlands
Year
1973
Tongue
English
Weight
211 KB
Volume
2
Category
Article
ISSN
0022-3611

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## Abstract Traditionally, sulfonated polymers are used as separator materials in PEM fuel cells. Based on recent experimental results on model compounds this paper critically discusses the potentials and limits of sulfonic acid and alternatively phosphonic acid and heterocycles (imidazole) as prot