Pith Number

pith:VJGP3HT2

pith:2017:VJGP3HT27HLMM6NWEUNXMZZ23V

not attested not anchored not stored refs pending

Solver composition across the PDE/linear algebra barrier

Lawrence Mitchell, Robert C. Kirby

arxiv:1706.01346 v3 · 2017-06-05 · cs.MS · 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{VJGP3HT27HLMM6NWEUNXMZZ23V}

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	2026-05-18T00:22:52.793618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aa4cfd9e7af9d6c679b6251b76673add4bdbd7c3709c8ea6f40c1460f89c1519

Aliases

arxiv: 1706.01346 · arxiv_version: 1706.01346v3 · doi: 10.48550/arxiv.1706.01346 · pith_short_12: VJGP3HT27HLM · pith_short_16: VJGP3HT27HLMM6NW · pith_short_8: VJGP3HT2

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/VJGP3HT27HLMM6NWEUNXMZZ23V \
  | 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: aa4cfd9e7af9d6c679b6251b76673add4bdbd7c3709c8ea6f40c1460f89c1519

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6215307310efe4f124f5944d05b37e1428a2f6dbed9b2745ee2f2392899e6be",
    "cross_cats_sorted": [
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MS",
    "submitted_at": "2017-06-05T14:25:39Z",
    "title_canon_sha256": "5e5ca5041e14861b2ae6d2bfa64f38f5d1c50e5f6444cbc8b3cc0a6e80143718"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.01346",
    "kind": "arxiv",
    "version": 3
  }
}