What does this $\models$ $\phi$ mean?
114508
What is the meaning of the double turnstile symbol ($\models$)?
18564
Why is the symmetry variation $\delta_s q$ different from the ordinary variation $\delta q$?
84930
How to justify $\phi(n) \ge \sqrt{n}$
46894
What's the difference between 'modeling' and 'modelling'?
82878
Order of cyclic groups and the Euler phi function
43814
What does it mean when a set is said to be a "finitely generated vector space"?
75225
Exercise $ 3.4.15 $ of David Marker’s “Model Theory”.
17657
What is the difference between model hyperparameters and model parameters?
63952
Disproving: If $(\Gamma\vdash(\phi\,\lor\psi))$, either $(\Gamma\vdash\phi)$ or $(\Gamma\vdash\psi)$ is true
34960
Lower bound for $\phi(n)$: Is $n/5  1$?
45179
When does the isomorphism $G\simeq \ker(\phi)\times \operatorname{im}(\phi)$? hold?
37012
The number of summands $\phi(n)$
135524
Is $\mathrm{ZFC}^E$ outright inconsistent?
49136
How to compute $m$ value from RSA if $phi(n)$ is not relative prime with the $e$?
46065
How do you find all $n$ such that $\phi(n)|n$
40383
Is it true that $|g| = |\phi(g)|$ for all homomorphisms $\phi: G \to G$ and $g \in G$?
120971
(Revised) Prove that $\phi$ is a group homomorphism and find the kernel.