Pith Number

pith:7OQCAO2C

pith:2018:7OQCAO2CD2WVJJJZP77HH6FACK

not attested not anchored not stored refs pending

Computational identification of the lowest space-wise dependent coefficient of a parabolic equation

Petr N. Vabishchevich

arxiv:1804.03171 v1 · 2018-04-09 · 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{7OQCAO2CD2WVJJJZP77HH6FACK}

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	2026-05-18T00:18:56.767289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fba0203b421ead54a5397ffe73f8a0128192cb5c813f33e4b57e575bf8c2d417

Aliases

arxiv: 1804.03171 · arxiv_version: 1804.03171v1 · doi: 10.48550/arxiv.1804.03171 · pith_short_12: 7OQCAO2CD2WV · pith_short_16: 7OQCAO2CD2WVJJJZ · pith_short_8: 7OQCAO2C

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/7OQCAO2CD2WVJJJZP77HH6FACK \
  | 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: fba0203b421ead54a5397ffe73f8a0128192cb5c813f33e4b57e575bf8c2d417

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "559ee6b446ef87b7034cb4b9a8071cae249c54c791cc655a707d3d84aebe0e7b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-04-09T18:18:45Z",
    "title_canon_sha256": "afb62f3f9e68dd368685121e433a91944ca121f7eabcf67788e3285759af5010"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03171",
    "kind": "arxiv",
    "version": 1
  }
}