The nature of the Lambda(1405)

We present here some results supporting the nature of the $\mathrm{\Lambda }(1405)$ resonance as dynamically generated from the meson baryon interaction in coupled channels and resulting from the superposition of two close-by poles. We find support for this picture in the $K^{-}p\to {\pi }^0{\pi }^0{\mathrm{\Sigma }}^0$ reaction, which shows a different shape than the one obtained from the $\pi ^- p \to K^0 \pi \Sigma $reaction\mathrm{.}Wealsocalltheattentiontothe$K^- p \to \gamma \pi \Sigma$with$\pi \Sigma$inthe$\Lambda(1405)$ region, which shows a narrow peak in the calculations around 1420 MeV. We also report on recent calculations of the radiative decay of the two $\mathrm{\Lambda }(1405)$ states and on reactions to obtain information on these decay modes. Finally, we present results for the $pp\to p{K}^{+}\mathrm{\Lambda }(1405)$ reaction recently measured at ANKE/COSY and compare them with theoretical results.