Pith Number

pith:4YW2IBYE

pith:2011:4YW2IBYEA6GLK77RBF6GU7QUHC

not attested not anchored not stored refs pending

Relaxation of the incompressible porous media equation

L\'aszl\'o Sz\'ekelyhidi Jr

arxiv:1102.2597 v2 · 2011-02-13 · 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{4YW2IBYEA6GLK77RBF6GU7QUHC}

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	2026-05-18T04:27:37.637424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e62da40704078cb57ff1097c6a7e1438b05c309ed2b44cdf10cf403e9ac239bc

Aliases

arxiv: 1102.2597 · arxiv_version: 1102.2597v2 · doi: 10.48550/arxiv.1102.2597 · pith_short_12: 4YW2IBYEA6GL · pith_short_16: 4YW2IBYEA6GLK77R · pith_short_8: 4YW2IBYE

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/4YW2IBYEA6GLK77RBF6GU7QUHC \
  | 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: e62da40704078cb57ff1097c6a7e1438b05c309ed2b44cdf10cf403e9ac239bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "99906743418b3cf26ef68e8f0fb3d548824dd945cb796d6f69bc2de65d0a6173",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2011-02-13T14:49:54Z",
    "title_canon_sha256": "93743e5dbcca8f2f3d797e68deb277533d357a0fc87db49fa1d76011c4eb3b62"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2597",
    "kind": "arxiv",
    "version": 2
  }
}