Roll your own derivations
8/12/26
You may have derivations of your own that you wish to try. Just type, paste, or drag and drop, them into the lower panel, select your derivation, and click 'Start from selection'.
[Often copy-and-paste won't work directly from a Web Page; however, usually drag-and-drop will work!]
You will need to use the correct logical symbols. Here they are
F ∴ F ∧ G ∼ ∧ ∨ ⊃ ≡ ∀ ∃ ∴
And the right syntax (the premises separated by commas and then a 'therefore' followed by the conclusion).
So, a selection needs to have a form similar to this
F⊃G,G⊃H∴F⊃H
Equally, you can take any of your completed proofs out and paste or save them elsewhere. Click the button Write Proof then copy whatever you wish. The text is html (i.e. like a web page) so the document you paste it into needs to 'know' about html. For example, pasting will work perfectly into Microsoft WORD.
If you are planning to do a large number of your own exercises, you might find them easier to do in the Deriver Web Application, see Exercises for Easy Deriver using the Deriver Web Application.