Pith Number

pith:7S5LX2JD

pith:2014:7S5LX2JDTPHDF7NH2K66NWOQVJ

not attested not anchored not stored refs pending

Two New Gradient Precondition Schemes for Full Waveform Inversion

Guanghui Huang, Haoran Ren, Huazhong Wang

arxiv:1406.1864 v1 · 2014-06-07 · physics.geo-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7S5LX2JDTPHDF7NH2K66NWOQVJ}

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	2026-05-18T02:49:38.365021Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fcbabbe9239bce32fda7d2bde6d9d0aa73066ebe82377edb72aa9638215d3640

Aliases

arxiv: 1406.1864 · arxiv_version: 1406.1864v1 · doi: 10.48550/arxiv.1406.1864 · pith_short_12: 7S5LX2JDTPHD · pith_short_16: 7S5LX2JDTPHDF7NH · pith_short_8: 7S5LX2JD

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/7S5LX2JDTPHDF7NH2K66NWOQVJ \
  | 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: fcbabbe9239bce32fda7d2bde6d9d0aa73066ebe82377edb72aa9638215d3640

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fa8fcba5135fc0abb653a4a93da43e9c2305b3eb607706e8d48e7aca625b3453",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2014-06-07T06:11:49Z",
    "title_canon_sha256": "ee5573f0ed900ae6bd5e2f02553935be31443ef43549d9b4976fdcbcc021f657"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1864",
    "kind": "arxiv",
    "version": 1
  }
}