Pith Number

pith:KOG2RYLI

pith:2009:KOG2RYLIP6YDUXTV5KUEHTE64X

not attested not anchored not stored refs pending

Singular limit of a two-phase flow problem in porous medium as the air viscosity tends to zero

Danielle Hilhorst (LM-Orsay), Marie Henry, Robert Eymard (LAMA)

arxiv:0910.4003 v1 · 2009-10-21 · math.NA · cs.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{KOG2RYLIP6YDUXTV5KUEHTE64X}

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	2026-06-03T23:06:29.974709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

538da8e1687fb03a5e75eaa843cc9ee5d1982f32f9e9da4d049a9a5ac51d6af5

Aliases

arxiv: 0910.4003 · arxiv_version: 0910.4003v1 · doi: 10.48550/arxiv.0910.4003 · pith_short_12: KOG2RYLIP6YD · pith_short_16: KOG2RYLIP6YDUXTV · pith_short_8: KOG2RYLI

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/KOG2RYLIP6YDUXTV5KUEHTE64X \
  | 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: 538da8e1687fb03a5e75eaa843cc9ee5d1982f32f9e9da4d049a9a5ac51d6af5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ebfe57df37c4753cbec7879d3e82e052423cdf82c89ff6fee510fa52597e2d2a",
    "cross_cats_sorted": [
      "cs.NA",
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2009-10-21T06:32:07Z",
    "title_canon_sha256": "7bfe9a22ef7a95b777a8fd6388862bfb40660e29800631d94d517de46471f5f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.4003",
    "kind": "arxiv",
    "version": 1
  }
}