Pith Number

pith:P5VM7F4N

pith:2009:P5VM7F4NHGAIQMHHOQ3NVWAYXO

not attested not anchored not stored refs pending

Semi-Lagrangian schemes for linear and fully non-linear diffusion equations

Espen R. Jakobsen, Kristian Debrabant

arxiv:0910.1046 v4 · 2009-10-06 · math.NA · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{P5VM7F4NHGAIQMHHOQ3NVWAYXO}

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	2026-05-18T02:51:15.360666Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7f6acf978d39808830e77436dad818bbb6e53202884b3bfd4f1f97fa32aab5fc

Aliases

arxiv: 0910.1046 · arxiv_version: 0910.1046v4 · doi: 10.48550/arxiv.0910.1046 · pith_short_12: P5VM7F4NHGAI · pith_short_16: P5VM7F4NHGAIQMHH · pith_short_8: P5VM7F4N

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/P5VM7F4NHGAIQMHHOQ3NVWAYXO \
  | 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: 7f6acf978d39808830e77436dad818bbb6e53202884b3bfd4f1f97fa32aab5fc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb9d9a50e11bf8ff261f9b3e619fedbd9d6ec9b5cdc9b5bf0801eeeeb33ec3c2",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-10-06T16:21:56Z",
    "title_canon_sha256": "8f38f16ed94c05b2f3056a8ce180a9c0cea6482607d74be1e0b7a883093f9d85"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.1046",
    "kind": "arxiv",
    "version": 4
  }
}