Pith Number

pith:M4YI55HD

pith:2013:M4YI55HDV2DW63L2I2LR7DMKWB

not attested not anchored not stored refs pending

String Theory has no Isotropic Solution for the Modified Einstein's Equations without the Dilaton

Christopher Frye, Costas Efthimiou

arxiv:1306.4871 v1 · 2013-06-20 · hep-th · gr-qc · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M4YI55HDV2DW63L2I2LR7DMKWB}

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	2026-05-18T03:20:08.766227Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67308ef4e3ae876f6d7a46971f8d8ab07f2268230d4b3a27eabead31c49b355d

Aliases

arxiv: 1306.4871 · arxiv_version: 1306.4871v1 · doi: 10.48550/arxiv.1306.4871 · pith_short_12: M4YI55HDV2DW · pith_short_16: M4YI55HDV2DW63L2 · pith_short_8: M4YI55HD

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/M4YI55HDV2DW63L2I2LR7DMKWB \
  | 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: 67308ef4e3ae876f6d7a46971f8d8ab07f2268230d4b3a27eabead31c49b355d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c8c42a70d1c5362e183e9a183e475f2b842767ad6119d1d830424d70a6f80099",
    "cross_cats_sorted": [
      "gr-qc",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "hep-th",
    "submitted_at": "2013-06-20T13:32:52Z",
    "title_canon_sha256": "c0f0c451948c2ecbda4ec18d03f4082117fd19b37590d82a9e5c4d90981e6c9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1306.4871",
    "kind": "arxiv",
    "version": 1
  }
}