Pith Number

pith:EGRTQK2I

pith:2011:EGRTQK2IE6E4YKRPYVFVWQ4ZAV

not attested not anchored not stored refs pending

Extended Derdzinski-Shen theorem for the Riemann tensor

Carlo Alberto Mantica, Luca Guido Molinari

arxiv:1101.4157 v1 · 2011-01-21 · math.DG · 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{EGRTQK2IE6E4YKRPYVFVWQ4ZAV}

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	2026-05-18T03:41:59.036037Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21a3382b482789cc2a2fc54b5b4399057c32433ca28b786ad609c5c8d6021779

Aliases

arxiv: 1101.4157 · arxiv_version: 1101.4157v1 · doi: 10.48550/arxiv.1101.4157 · pith_short_12: EGRTQK2IE6E4 · pith_short_16: EGRTQK2IE6E4YKRP · pith_short_8: EGRTQK2I

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/EGRTQK2IE6E4YKRPYVFVWQ4ZAV \
  | 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: 21a3382b482789cc2a2fc54b5b4399057c32433ca28b786ad609c5c8d6021779

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "db008f7e2742b0d2f24b259810b9345afb72721947c14941d0be23314f45a11c",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2011-01-21T15:20:35Z",
    "title_canon_sha256": "e30bb5a18b7164382a8b88c9c9ebbe1fd120a9769eb55016eff9a437d1abcd4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4157",
    "kind": "arxiv",
    "version": 1
  }
}