**Brief Description** Handwritten mathematical symbols **Preprocessing** All symbols are centered and of size 32px x 32px. **Instances** 168233 **Format** Images and Text **Default Task** Classification **Reference** This paper describes the HASYv2 dataset. HASY is a publicly available, free of charge dataset of single symbols similar to MNIST. It contains 168233 instances of 369 classes. HASY contains two challenges: A classification challenge with 10 pre-defined folds for 10-fold cross-validation and a verification challenge. The HASYv2 dataset (PDF Download Available). Available from: https://arxiv.org/pdf/1701.08380.pdf [accessed Aug 11, 2017]. **Creator** Martin Thoma