AXIOM: the scientific computation system
AXIOM: the scientific computation system
ISSAC '99 Proceedings of the 1999 international symposium on Symbolic and algebraic computation
Data Type Specification: Parameterization and the Power of Specification Techniques
ACM Transactions on Programming Languages and Systems (TOPLAS)
Equality in computer algebra and beyond
Journal of Symbolic Computation - Integrated reasoning and algebra systems
The design of maple: A compact, portable and powerful computer algebra system
EUROCAL '83 Proceedings of the European Computer Algebra Conference on Computer Algebra
Towards better simplification of elementary functions
Proceedings of the 2002 international symposium on Symbolic and algebraic computation
Understanding expression simplification
ISSAC '04 Proceedings of the 2004 international symposium on Symbolic and algebraic computation
Linear syntax for communicating elementary mathematics
Journal of Symbolic Computation
Proceedings of the 9th AISC international conference, the 15th Calculemas symposium, and the 7th international MKM conference on Intelligent Computer Mathematics
Adapting mathematical domain reasoners
AISC'10/MKM'10/Calculemus'10 Proceedings of the 10th ASIC and 9th MKM international conference, and 17th Calculemus conference on Intelligent computer mathematics
Students' comparison of their trigonometric answers with the answers of a computer algebra system
CICM'13 Proceedings of the 2013 international conference on Intelligent Computer Mathematics
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How do we recognize when an answer is "right"? This is a question that has bedevilled the use of computer systems in mathematics (as opposed to arithmetic) ever since their introduction. A computer system can certainly say that some answers are definitely wrong, in the sense that they are provably not an answer to the question posed. However, an answer can be mathematically right without being pedagogically right. Here we explore the differences and show that, despite the apparent distinction, it is possible to make many of the differences amenable to formal treatment, by asking "under which congruence is the pupil's answer equal to the teacher's?".