what are first and second order logics?
96504
First-Order Logic vs. Second-Order Logic
18968
Converting English into first order predicate logic
87928
Proof of logical equivalence of biconditional and other proposition
53199
First-Order Logic: Formalisation of the phrase "Not all that glitters is gold"
9968
First-order logic advantage over second-order logic
7214
Does linear ordering need the Axiom of Choice?
131257
$\to$ vs. $\vdash$ in logic
101741
Selection of logical connectives {¬,∨,∧,⇒,⇔} in set theory?
111862
Proof for sequent (Logic)
94947
How to turn a system of first order into a second order
98436
Finite order endomorphisms
71670
Predicates and Quantifiers?
32244
Propositional Logic - Deduction
18287
Distinction between equality, logical equivalence and biconditionality.
135267
Predicate Logic and Inference
35672
First, … Secondly, … &c
98769
Find a universe and a predicate that satisfy the following formula