Pith Number

pith:Q4QCMC7V

pith:2018:Q4QCMC7VHGTFJOYIID4S4QK7PK

not attested not anchored not stored refs pending

Spectrally Accurate Energy-preserving Methods for the Numerical Solution of the "Good" Boussinesq Equation

Chengjian Zhang, Gianmarco Gurioli, Luigi Brugnano

arxiv:1807.05182 v1 · 2018-07-13 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q4QCMC7VHGTFJOYIID4S4QK7PK}

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	2026-05-17T23:56:47.660334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8720260bf539a654bb0840f92e415f7aaad7e73ebd6e13051a51a7c1c4daa262

Aliases

arxiv: 1807.05182 · arxiv_version: 1807.05182v1 · doi: 10.48550/arxiv.1807.05182 · pith_short_12: Q4QCMC7VHGTF · pith_short_16: Q4QCMC7VHGTFJOYI · pith_short_8: Q4QCMC7V

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/Q4QCMC7VHGTFJOYIID4S4QK7PK \
  | 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: 8720260bf539a654bb0840f92e415f7aaad7e73ebd6e13051a51a7c1c4daa262

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7674e56e9f42d66f0f078cc5d53ba3f77e995bf7e4db3caafeec89608eb7f865",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-07-13T17:13:11Z",
    "title_canon_sha256": "b1e33ded206ad6d8ee214882da13cf3e1875c35ed92c683f1c7d5a59104a5336"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05182",
    "kind": "arxiv",
    "version": 1
  }
}