9. Let us assume that the circumstance that … the sign for hydrogen by the sign for … If we imagine that an expression can thus … regarded as replaceable by others, that denotes the … QuoteRef: fregG_1879 ;;22 (9.) "If in an … sign has one or more occurrences and if … (but everywhere by the same thing), then we … argument of the function. [similarly, can produce functions of two or more arguments].
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