RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
2,700 results for "de Sitter space" — page 14 of 135
B_1_20 — Trickster Deities: Cross-Cultural Comparison
The trickster is among the most widespread deity archetypes in world mythology, appearing independently across every inhabited continent. Characterized by cunning, boundary-crossing, shapeshifting, and the subversion of
B_1_17 — Underworld Deities: Ereshkigal, Hades, Hel, and the Rulers of the Dead
Every major world civilization has produced deities or supernatural rulers associated with death and the underworld. The Sumerian Ereshkigal (attested from the 3rd millennium BCE), the Greek Hades (first named in the Ili
B_3_17 — Nāga Kings: Serpent Deities in Buddhist, Hindu, and Southeast Asian Tradition
The Nāga (Sanskrit: नाग) — divine serpent beings with the power to assume human, serpentine, or hybrid forms — constitute one of the most pervasive and enduring supernatural categories across South and Southeast Asian re
ZD_5_11 — Version Control: Git, Distributed VCS, and Collaborative Software Development
Version control systems (VCS) are tools that track changes to files over time — enabling software developers (and increasingly writers, designers, scientists, and data analysts) to record the history of every modificatio
ZD_5_12 — Edge AI and TinyML: On-Device Machine Learning and Embedded Intelligence
Edge AI is the deployment of artificial intelligence algorithms on devices at the "edge" of the network — smartphones, embedded systems, cameras, sensors, wearables, industrial controllers, autonomous vehicles, and drone
ZD_2_16 — Federated Learning & Privacy-Preserving ML
Federated learning (FL) is a machine learning paradigm in which a model is trained across multiple decentralized devices or servers holding local data samples, without exchanging the raw data — the model comes to the dat
ZD_2_15 — Transformer Architecture: Self-Attention and the Foundation of Modern AI
The transformer is a neural network architecture introduced in 2017 that replaced recurrent and convolutional models as the dominant paradigm in artificial intelligence. Its core innovation — the self-attention mechanism
ZD_2_12 — Generative AI: Large Language Models, Diffusion, and the Transformer Revolution
Generative AI refers to artificial intelligence systems capable of creating new content — text, images, audio, video, code, 3D models — that is novel, coherent, and often indistinguishable from human-created work. The fi
ZD_2_10 — Speech Recognition and Synthesis: From Acoustic Models to Neural Voice Generation
Speech recognition (Automatic Speech Recognition — ASR) and speech synthesis (Text-to-Speech — TTS) are complementary technologies that bridge human spoken language and machine processing. ASR converts spoken audio into
ZD_2_11 — Reinforcement Learning: Agents, Rewards, and Sequential Decision-Making
Reinforcement learning (RL) is a paradigm of machine learning in which an agent learns to make sequential decisions by interacting with an environment, receiving rewards (or penalties) for its actions, and adjusting its
L_1_16 — Denisovan Genetics and Legacy
The Denisovans — an extinct group of archaic humans first identified in 2010 from ancient DNA extracted from a finger bone fragment found in Denisova Cave, Altai Mountains, Siberia (~41,000 years old) — represent one of
L_2_17 — Pacific Islander Genetics: Austronesian Ancestry, Denisovan Introgression, and Oceanian Genomics
Pacific Islander populations — spanning Melanesia, Micronesia, and Polynesia — harbor some of the most genetically complex and scientifically informative genomes in human biology. Their genetic history records multiple d
L_5_10 — Neandertal Introgression: Which Genes and Why They Persisted
When modern humans (Homo sapiens) migrated out of Africa ~60,000-70,000 years ago and encountered Neanderthals (Homo neanderthalensis) in western Asia and Europe, the two species interbred — and the genetic legacy of tha
L_5_11 — Genetics of Altitude Adaptation: Tibet, Andes, Ethiopia
High-altitude adaptation represents one of the most dramatic and best-studied examples of natural selection in contemporary human populations. More than 140 million people worldwide live at elevations above 2,500 meters,
Y_4_17 — Sleep Disorders & Parasomnias
Sleep disorders affect an estimated 50–70 million Americans and up to 45% of the global population, encompassing over 80 distinct conditions classified by the International Classification of Sleep Disorders (ICSD-3, 2014
Y_5_18 — Sensory Deprivation & Float Tanks
Sensory deprivation — the systematic reduction or elimination of external sensory input — has been studied scientifically since the 1950s, with two primary paradigms: chamber REST (Restricted Environmental Stimulation Te
Y_5_13 — Starvation and Dehydration: Cognitive Effects of Deprivation States
Starvation and dehydration — states of severe and prolonged nutritional and fluid deprivation — produce a characteristic and well-documented progression of cognitive, perceptual, and emotional alterations that constitute
Y_5_12 — Dark Retreat: Extended Light Deprivation and Endogenous Visionary States
The dark retreat (yangti nagpo or mun mtshams in Tibetan) is an advanced contemplative practice — primarily within the Dzogchen (Great Perfection) tradition of Tibetan Buddhism and the closely related Bön tradition — in
Y_2_05 — Near-Death Experiences: Cross-Cultural Analysis
Near-death experiences (NDEs) — profound subjective experiences occurring during clinical death, cardiac arrest, or perceived proximity to death — have been reported across virtually all cultures and historical periods.
Y_2_14 — Dying Process Phenomenology: Shared Death Experiences and After-Death Communication
The phenomenology of death and the experiences reported by those who witness the dying process include several distinct categories of altered-state phenomena that extend beyond the well-known near-death experience (NDE).
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