1 INTRODUCTION

2 ROTATION IN WEAK LENSING
2.1 Rotation from cosmological perturbations
2.2 Rotation to B-mode correspondence

3 REVIEW OF RADIO WEAK LENSING

4 ESTIMATING THE SHEAR AND ROTATION
4.1 Properties of the estimators

5 COSMOLOGICAL SIMULATIONS
5.1 Cosmic string spectra

6 RESULTS

7 CONCLUSION