≐ approaches limit \doteq
⊧ models \models
≈ approximately \approx ≈ ∉ not an element of \notin ∉
≃ asymptotically equal to \simeq
≠ not equal \neq ≠
≅ congruent \cong ≅ ⊐ original of \sqsupset
∋ contains \ni ∋ ⊒ original of or equal to \sqsupseteq
∣ divides \mid
∥ parallel \parallel
∈ element of \in ∈ ⊥ perpendicular \perp ⊥
≡ equivalent \equiv ≡ ≺ precedes \prec
≍ equivalent to \asymp
≼ precedes or equal to \preceq
⌢ frown \frown
∝ proportional to \propto
> greater than > > ⊢ right tack \vdash
≥ greater than or equal \ge \geq ≥ ∼ similar/tilde \sim ∼
≫ much greater than \gg
⌣ smile \smile
⊏ image of \sqsubset
⊂ subset of \subset ⊂
⊑ image of or equal to \sqsubseteq
⊆ subset of or equal to \subseteq ⊆
⋈ join \bowtie
≻ succedes \succ
⊣ left tack \dashv
≽ succedes or equal to \succeq
< less than < &lt; ⊃ superset of \supset &sup;
≤ less than or equal \le\leq &le; ⊇ superset of or equal to \supseteq &supe;
≪ much less than \ll




About the Author...

Thomas Uphill

Thomas Uphill

Thomas is a meat popsicle. Thomas started working with UNIX while at SFU and UBC in Vancouver. Starting out on IRIX, HPUX and Solaris, he quickly transitioned to Linux in the early 90s.  He has been a System Administrator and a Developer working mainly in Python and C.  He's written several technology books, many dealing with Puppet and Configuration Management.

He is available for side projects under his LLC, https://uphillian.com

He lives and works in Seattle, in Pacific Northwest tradition he is an avid Mountain Biker and Hiker.