About

Log in?

DTU users get better search results including licensed content and discounts on order fees.

Anyone can log in and get personalized features such as favorites, tags and feeds.

Log in as DTU user Log in as non-DTU user No thanks

DTU Findit

Recent

Boolean: (bicycle AND helmet) OR (head AND protection) (always group AND in parenthesis)
Title: title:(climate change)
Author: author:("bohr niels" OR "bohr n") (avoid only full first name)
Phrase: "water pump control" (does not work with wildcards)
Wildcards: wom?n pharm*

More help on how to search

Flexible matching

About search syntax

Search syntax Advanced
Close advanced
{{problem}}
By field Using AND/OR By author
This tool can help you build boolean queries suitable for doing a broad search for different synonyms or spellings of each word. Start via the drop-down below or just start typing in the search field.
{{ row.typeTitle }}: ( )

Since our index often lack the full first name of people it can be difficult to correctly search by author.

Fill in the fields and let us help you build a good query:

If you need to find everything possible, consider only searching by last name.

Use "Starting year" to ignore publications out of year range.

Author: Villadsen remove
Filter results...

Interpreted as:

title:(NaDeA\: AND A AND Natural AND Deduction AND Assistant AND with AND a AND Formalization AND in AND Isabelle)

Suggestions: Include records that partially match the query

Filter results
Access
Type
Language
Year
From DTU
Advanced
Previous 1 - 3 of 3 Next
Export
10 items by relevance
1 Journal article

NaDeA: A Natural Deduction Assistant with a Formalization in Isabelle

Villadsen, Jørgen; Jensen, Alexander Birch; Schlichtkrull, Anders

Ifcolog Journal of Logics and Their Applications — 2017, Volume 4, Issue 1, pp. 55-82

We present a new software tool for teaching logic based on natural deduction. Its proof system is formalized in the proof assistant Isabelle such that its definition is very precise. Soundness of the formalization has been proved in Isabelle. The tool is open source software developed in TypeScript

Year: 2017

Language: English

More...
dgbhkoj plniefa mc
2 Conference paper

NaDeA: A Natural Deduction Assistant with a Formalization in Isabelle

Villadsen, Jørgen; Jensen, Alexander Birch; Schlichtkrull, Anders

Proceedings of the Fourth International Conference on Tools for Teaching Logic (ttl 2015) — 2015, pp. 253-262

We present a new software tool for teaching logic based on natural deduction. Its proof system is formalized in the proof assistant Isabelle such that its definition is very precise. Soundness of the formalization has been proved in Isabelle. The tool is open source software developed in TypeScript

Year: 2015

Language: English

More...
och kedpamgbifjnl
3 Preprint article

NaDeA: A Natural Deduction Assistant with a Formalization in Isabelle

Villadsen, Jørgen; Jensen, Alexander Birch; Schlichtkrull, Anders

We present a new software tool for teaching logic based on natural deduction. Its proof system is formalized in the proof assistant Isabelle such that its definition is very precise. Soundness of the formalization has been proved in Isabelle. The tool is open source software developed in TypeScript

Year: 2015

Language: Undetermined

More...
cmli n pbjahkedfg o

DTU users get better search results including licensed content and discounts on order fees.

Log in as DTU user