DeepSeek-R1 Thoughtology: Let's about LLM Reasoning. - Sara Vera Marjanovic; Arkil Patel; Vaibhav Adlakha; Milad Aghajohari; Parishad BehnamGhader; Mehar Bhatia; Aditi Khandelwal; Austin Kraft; Benno Krojer; Xing Han Lù; Nicholas Meade; Dongchan Shin; et al. (CoRR, 2025)