Pith Number

pith:QRHYIDRO

pith:2014:QRHYIDRORPPDF6M67HP56TCH5T

not attested not anchored not stored refs pending

Hessian Operators on Constraint Manifolds

Dan Com\u{a}nescu, Petre Birtea

arxiv:1403.4091 v2 · 2014-03-17 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QRHYIDRORPPDF6M67HP56TCH5T}

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	2026-05-18T00:06:44.278825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

844f840e2e8bde32f99ef9dfdf4c47ecfdca7a3d425354dee0f4d3b98038b4db

Aliases

arxiv: 1403.4091 · arxiv_version: 1403.4091v2 · doi: 10.48550/arxiv.1403.4091 · pith_short_12: QRHYIDRORPPD · pith_short_16: QRHYIDRORPPDF6M6 · pith_short_8: QRHYIDRO

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/QRHYIDRORPPDF6M67HP56TCH5T \
  | 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: 844f840e2e8bde32f99ef9dfdf4c47ecfdca7a3d425354dee0f4d3b98038b4db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "889b1f1386c97c9b76562661adfc40fdce39ec2e52468da81118d15f6c3175b0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2014-03-17T13:43:11Z",
    "title_canon_sha256": "edbb4c0112d56010cce5bea5d464b121b8574c2d1b64b2fd24bf8f0db279d683"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.4091",
    "kind": "arxiv",
    "version": 2
  }
}