Pith Number

pith:FGKJS7D4

pith:2022:FGKJS7D4BMJF5IVLOIVC3RI4FA

not attested not anchored not stored refs pending

Modified BDF2 schemes for subdiffusion models with a singular source term

Jiankang Shi, Minghua Chen, Zhi Zhou

arxiv:2207.08447 v1 · 2022-07-18 · math.NA · cs.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{FGKJS7D4BMJF5IVLOIVC3RI4FA}

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	2026-07-05T04:41:04.664839Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2994997c7c0b125ea2ab722a2dc51c282951c1f0c051996f7fafc63ca3b82c54

Aliases

arxiv: 2207.08447 · arxiv_version: 2207.08447v1 · doi: 10.48550/arxiv.2207.08447 · pith_short_12: FGKJS7D4BMJF · pith_short_16: FGKJS7D4BMJF5IVL · pith_short_8: FGKJS7D4

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/FGKJS7D4BMJF5IVLOIVC3RI4FA \
  | 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: 2994997c7c0b125ea2ab722a2dc51c282951c1f0c051996f7fafc63ca3b82c54

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74c8aea7d5c1f5bbdcd3922410259a7fa086adc4667702c5597c770d3ec04ff8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2022-07-18T09:00:07Z",
    "title_canon_sha256": "a850dc24e52d70ef25a6ad7edda4a6c1ddc1c8b710916a8f820c2e70c6e26aa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2207.08447",
    "kind": "arxiv",
    "version": 1
  }
}