Just A few handy symbols

€ = euro

∀ = for all

∂ = partially differential

∃ = there exhists

∅ = empty sets

∇ = nabla

∑ = autosum

∈ = element of

∉ = not an element of

∋ = contains a member

∏ = n-ary product

This is just a few that may help with a webpage there is more, see the link on home for further info.