BBC

Guardians: Defenders of Mathematica - KS2 Maths

Choose a character, then add, subtract, divide and multiply numbers to battle your way to victory in this fun maths game. Challenge yourself across 11 KS2 maths topics from the Mysterious Mountains of ...
IEEE

Quaternion Hyperbolic Tangent Geman–McClure for Adaptive Filtering

Abstract: Quaternion Adaptive Filters play a crucial role in the analysis and processing of 3D and 4D signals. However, existing algorithms for quaternion adaptive filtering experience performance ...
BBC

Multiplying and dividing

Practise your 2 times tables with this quiz. The 5 times table Learn all about the 5 times table and find out about multiples of 5. The 10 times table Discover the 10 times tables and try this quiz.
IEEE

SS-PLRQR: Super-Spectrum Parallel Low-Rank Quaternion Recovery for Hyperspectral Image Classification

Abstract: Low-rank tensor recovery (LRTR)-based feature extraction from authentic hyperspectral images (HSIs) has become widely employed to improve classification performance by removing sparse errors ...