Pith Number

pith:Y3HDSESP

pith:2008:Y3HDSESPBLU7KX7WDRL5CPWUUG

not attested not anchored not stored refs pending

Variational Particle Schemes for the Porous Medium Equation and for the System of Isentropic Euler Equations

Jon Wilkening, Michael Westdickenberg

arxiv:0807.3573 v2 · 2008-07-22 · 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{Y3HDSESPBLU7KX7WDRL5CPWUUG}

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	2026-05-18T02:24:57.192994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6ce39124f0ae9f55ff61c57d13ed4a1b4475a19e239dd4b694eb9d586ff4012

Aliases

arxiv: 0807.3573 · arxiv_version: 0807.3573v2 · doi: 10.48550/arxiv.0807.3573 · pith_short_12: Y3HDSESPBLU7 · pith_short_16: Y3HDSESPBLU7KX7W · pith_short_8: Y3HDSESP

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/Y3HDSESPBLU7KX7WDRL5CPWUUG \
  | 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: c6ce39124f0ae9f55ff61c57d13ed4a1b4475a19e239dd4b694eb9d586ff4012

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "552e81526ba4eca1d4b52808b818a1890cf6ba54bb9b164e836adc7d9877bedb",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2008-07-22T22:52:34Z",
    "title_canon_sha256": "0859d5d4dd2af0d9e61460c4ba7931305f48cb49c12f10fa3e5cc08980c7907e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0807.3573",
    "kind": "arxiv",
    "version": 2
  }
}