Pith Number

pith:QDVBHGHQ

pith:2026:QDVBHGHQVQR2G34PABN424IMVM

not attested not anchored not stored refs pending

Where diverse populations gather: Transit accessibility and the spatial structure of social mixing

Yuan Liao

Transit catchment diversity predicts visitor diversity at urban points of interest, acting as a spatial bridge between demographic groups.

arxiv:2604.14348 v2 · 2026-04-15 · physics.soc-ph

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\usepackage{pith}
\pithnumber{QDVBHGHQVQR2G34PABN424IMVM}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Transit catchment diversity is a consistent positive predictor of visitor diversity across nearly all cities, with the strongest effects in large metropolitan areas and where transit links demographically distinct neighborhoods.

C2weakest assumption

That aggregated mobile phone GPS traces and foot traffic data accurately and unbiasedly capture the socioeconomic diversity of both transit users and venue visitors without significant sampling or privacy-related distortions.

C3one line summary

Transit catchment diversity is a consistent positive predictor of visitor diversity at urban venues, with stronger spatial clustering in US cities than in Swedish ones.

Receipt and verification

First computed	2026-05-20T01:05:13.394786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80ea1398f0ac23a36f8f005bcd710cab2fb5668aff0290314f4bfa84b915447b

Aliases

arxiv: 2604.14348 · arxiv_version: 2604.14348v2 · doi: 10.48550/arxiv.2604.14348 · pith_short_12: QDVBHGHQVQR2 · pith_short_16: QDVBHGHQVQR2G34P · pith_short_8: QDVBHGHQ

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/QDVBHGHQVQR2G34PABN424IMVM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 80ea1398f0ac23a36f8f005bcd710cab2fb5668aff0290314f4bfa84b915447b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3f120b4e2c830d905ef12aa631c86f1082e7239010c1f5d1d71589b5a11cd23",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2026-04-15T19:00:41Z",
    "title_canon_sha256": "f9a5d29969290d33f2792f020a4ae8b3d7d68d9236a584853c227e98b1566382"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.14348",
    "kind": "arxiv",
    "version": 2
  }
}