Concavity of the auxiliary function appearing in quantum reliability function an classical-quantum channels
<|reference_start|>Concavity of the auxiliary function appearing in quantum reliability function an classical-quantum channels: Concavity of the auxiliary function which appears in the random coding exponent as the lower bound of the quantum reliability function for general quantum states is proven for s between 0 and 1.<|reference_end|>
@article{fujii2005concavity,
    title={Concavity of the auxiliary function appearing in quantum reliability
  function an classical-quantum channels},
    author={Jun Ichi Fujii, Ritsuo Nakamoto, Kenjiro Yanagi},
    journal={arXiv preprint arXiv:cs/0501057},
    year={2005},
    doi={10.1109/ISIT.2005.1523466},
    archivePrefix={arXiv},
    eprint={cs/0501057},
    primaryClass={cs.IT math.IT}
}