Emst Mally ,an Austrian logican,who presented the first system of deontic logic in 1926,and has contributed a lot to development of deontic logic.

• 恩斯特·马利(Ernst Mally),奥地利著名逻辑学家,于1926年提出了第一个道义逻辑系统,开辟了逻辑研究的新领域。