{"id":"W2607845675","doi":"10.1090/amsip/050/13","title":"Global Lorentzian geometry from lightlike geodesics: What does an observer in (2+1)-gravity see?","year":2011,"lang":"en","type":"book-chapter","venue":"AMS/IP studies in advanced mathematics","topic":"Advanced Differential Geometry Research","field":"Physics and Astronomy","cited_by":2,"is_retracted":false,"has_abstract":false,"ca_institutions":"McMaster University","funders":"","keywords":"Geodesic; Observer (physics); Geometry; Physics; Classical mechanics; Geodesy; Mathematics; Geology; Quantum mechanics","routes":{"ca_aff":true,"ca_fund":false,"ca_venue":false,"about_ca":false,"invisible_to_affiliation_only":false},"retraction":null,"screen":null,"direct_labels":[],"prediction":{"model_version":"metacan-v3-hybrid-931329e0061c","candidate_categories":[],"consensus_categories":[],"category_scores_codex":[0.0005999694,0.0005925741,0.0005448875,0.0004654912,0.0007373544,0.002489655,0.0005845315,0.001231032,0.002682563],"category_scores_gemma":[0.0008320799,0.00026817,0.0003895643,0.0006051842,0.005123406,0.006809938,0.0009443514,0.002664034,0.000627319],"about_ca_system_candidate":false,"about_ca_system_consensus":false,"about_ca_system_score_codex":0.0007665433,"about_ca_system_score_gemma":0.0005309183,"about_ca_topic_candidate":false,"about_ca_topic_consensus":false,"about_ca_topic_score_codex":0.001064385,"about_ca_topic_score_gemma":0.0009988686,"domain_scores_codex":[0.9998535,0.00004929734,0.000005178973,0.00003257044,0.0000365329,0.00002287113],"domain_scores_gemma":[0.9998036,0.0000740676,0.0000238917,0.00002690175,0.00003687835,0.00003483583],"domain_codex":null,"domain_gemma":null,"domain_candidate":null,"domain_consensus":null,"study_design_codex":"theoretical_or_conceptual","study_design_gemma":"theoretical_or_conceptual","study_design_scores_codex":[0.000004541034,0.000003095446,0.00006306739,0.00003583755,0.000002781008,0.00002723062,0.0006083159,0.0001342902,0.0001615144,0.9876835,0.003690764,0.007585165],"study_design_scores_gemma":[0.000002097642,0.000007433403,0.000119361,0.0000156484,0.000002811906,0.00004050402,0.0002089336,0.0001835361,0.00005060424,0.9786427,0.02072185,0.000004483858],"study_design_candidate":"theoretical_or_conceptual","study_design_consensus":"theoretical_or_conceptual","genre_codex":"other","genre_gemma":"other","genre_scores_codex":[0.1151389,0.05546358,0.1152347,0.05819371,0.00409961,0.00004993864,0.0004429156,0.0004568519,0.6509197],"genre_scores_gemma":[0.7995537,0.03613763,0.02552514,0.005178939,0.004042752,0.00007027789,0.0003237988,0.0003784516,0.1287893],"genre_candidate":"other","genre_consensus":"other","teacher_disagreement_score":0.002682563,"threshold_uncertainty_score":0.008974075,"prediction_status":"machine_predicted_unvalidated"},"machine_scores":{"provisional":true,"baseline":true,"maturity_gate_passed":false,"score_opus":0.07514846433911863,"score_gpt":0.3538109538514946,"score_spread":0.278662489512376,"validation_status":"score_only:v0-immature-baseline","note":"Baseline scores from an immature model (maturity gate not passed). Scores rank; they never assert a category."}}