Pith Number

pith:ADQAICNB

pith:2002:ADQAICNB4I2RZFYOKFS3VYBJIT

not attested not anchored not stored refs pending

On Unitary Time Evolution in Gowdy $T^3$ Cosmologies

Alejandro Corichi, Hernando Quevedo, Jeronimo Cortez

arxiv:gr-qc/0204053 v2 · 2002-04-16 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ADQAICNB4I2RZFYOKFS3VYBJIT}

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

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	2026-05-18T01:39:23.742106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00e00409a1e2351c970e5165bae02944fede471728abe4eb1a4a3825bb8d7a87

Aliases

arxiv: gr-qc/0204053 · arxiv_version: gr-qc/0204053v2 · doi: 10.48550/arxiv.gr-qc/0204053 · pith_short_12: ADQAICNB4I2R · pith_short_16: ADQAICNB4I2RZFYO · pith_short_8: ADQAICNB

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/ADQAICNB4I2RZFYOKFS3VYBJIT \
  | 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: 00e00409a1e2351c970e5165bae02944fede471728abe4eb1a4a3825bb8d7a87

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d5f3cbfe43e00ef0b4bcfdf653267c34fce9e3bf3b4bd938644bfdfeaf47b06c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "gr-qc",
    "submitted_at": "2002-04-16T16:11:42Z",
    "title_canon_sha256": "c7513cae6913263b39e36db67b0378c50c2b833ae1ae72bd9ebbfc7e796b32ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "gr-qc/0204053",
    "kind": "arxiv",
    "version": 2
  }
}