Pith Number

pith:FNXMIDRP

pith:2015:FNXMIDRPJ42XHBJ5YVRBQ3RZ4K

not attested not anchored not stored refs pending

Is the $(3+1)-d$ nature of the universe a thermodynamic necessity?

F. Angulo-Brown, Julian Gonzalez-Ayala

arxiv:1502.01843 v2 · 2015-02-06 · 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{FNXMIDRPJ42XHBJ5YVRBQ3RZ4K}

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	2026-05-18T02:27:00.465123Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b6ec40e2f4f3573853dc562186e39e29569a51c6b59ae42f035600226fb5858

Aliases

arxiv: 1502.01843 · arxiv_version: 1502.01843v2 · doi: 10.48550/arxiv.1502.01843 · pith_short_12: FNXMIDRPJ42X · pith_short_16: FNXMIDRPJ42XHBJ5 · pith_short_8: FNXMIDRP

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/FNXMIDRPJ42XHBJ5YVRBQ3RZ4K \
  | 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: 2b6ec40e2f4f3573853dc562186e39e29569a51c6b59ae42f035600226fb5858

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f229fc2c1bb9a109419a063b3d6959f23f41f55af199cd0f764be60bcea7317b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-02-06T10:18:27Z",
    "title_canon_sha256": "b17216923b21f30c0945239250dac8d7a96ec5271f81afc352815871b5d80869"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.01843",
    "kind": "arxiv",
    "version": 2
  }
}