Pith Number

pith:FHALWUPU

pith:1993:FHALWUPUB2VXKM2HTWH6DED7LB

not attested not anchored not stored refs pending

Curvature and Flatness in a Brans-Dicke Universe

Janna Levin, Katherine Freese

arxiv:gr-qc/9312025 v1 · 1993-12-15 · gr-qc · astro-ph

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FHALWUPUB2VXKM2HTWH6DED7LB}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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.

Receipt and verification

First computed	2026-05-18T04:37:57.357051Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29c0bb51f40eab7533479d8fe1907f586da81f81f2c869593db06496de4fd184

Aliases

arxiv: gr-qc/9312025 · arxiv_version: gr-qc/9312025v1 · doi: 10.48550/arxiv.gr-qc/9312025 · pith_short_12: FHALWUPUB2VX · pith_short_16: FHALWUPUB2VXKM2H · pith_short_8: FHALWUPU

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/FHALWUPUB2VXKM2HTWH6DED7LB \
  | 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: 29c0bb51f40eab7533479d8fe1907f586da81f81f2c869593db06496de4fd184

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a98c6b215f55e26bf4879281485f834702ac3e25607cbcece59b18bc58d6973d",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "1993-12-15T23:11:17Z",
    "title_canon_sha256": "d56b91eec481b8637a026ea0f06f8471fba61346157975dbebfc85dd48ba4e1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/9312025",
    "kind": "arxiv",
    "version": 1
  }
}