Averaging the aleph (IMAGE) University of Groningen Caption An illustration of how heatmaps of normalized average character shapes are generated for individual letters (in this example: aleph). Credit Maruf A. Dhali, University of Groningen Usage Restrictions With credit License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.