Pith Number

pith:PV6JLWTM

pith:2013:PV6JLWTMXOY7X4ZWS4CJQNLQTJ

not attested not anchored not stored refs pending

Numerical solving the identification problem for the lower coefficient of parabolic equation

P.N. Vabishchevich, V.I. Vasil'ev

arxiv:1304.5923 v1 · 2013-04-22 · cs.NA · 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{PV6JLWTMXOY7X4ZWS4CJQNLQTJ}

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	2026-05-18T03:27:23.753257Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d7c95da6cbbb1fbf33697049835709a5b79bd55e5e4e2da319a8cda7503354f

Aliases

arxiv: 1304.5923 · arxiv_version: 1304.5923v1 · doi: 10.48550/arxiv.1304.5923 · pith_short_12: PV6JLWTMXOY7 · pith_short_16: PV6JLWTMXOY7X4ZW · pith_short_8: PV6JLWTM

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/PV6JLWTMXOY7X4ZWS4CJQNLQTJ \
  | 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: 7d7c95da6cbbb1fbf33697049835709a5b79bd55e5e4e2da319a8cda7503354f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6efaa875cef0b13175a3c208543dca793fead4e9e73ab1f7785b032af4be88b6",
    "cross_cats_sorted": [
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2013-04-22T12:19:15Z",
    "title_canon_sha256": "3dd697ed062ed3046dc5440d0e1e8bd7d013f800e2e22496ee5feb0a2d32f334"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5923",
    "kind": "arxiv",
    "version": 1
  }
}