Pith Number

pith:IWDIZNNZ

pith:2018:IWDIZNNZGH6BOCYFLBJ7QXKY2Q

not attested not anchored not stored refs pending

Operator splitting technique using streamline projection for two-phase flow in highly heterogeneous and anisotropic porous media

Barbara Wohlmuth, Ettore Vidotto, Martin Schneider, Rainer Helmig

arxiv:1802.07540 v1 · 2018-02-21 · math.NA · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IWDIZNNZGH6BOCYFLBJ7QXKY2Q}

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	2026-05-17T23:59:44.699143Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

45868cb5b931fc170b055853f85d58d42fa85a5283aa376e304cdcd49c81a156

Aliases

arxiv: 1802.07540 · arxiv_version: 1802.07540v1 · doi: 10.48550/arxiv.1802.07540 · pith_short_12: IWDIZNNZGH6B · pith_short_16: IWDIZNNZGH6BOCYF · pith_short_8: IWDIZNNZ

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/IWDIZNNZGH6BOCYFLBJ7QXKY2Q \
  | 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: 45868cb5b931fc170b055853f85d58d42fa85a5283aa376e304cdcd49c81a156

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "38d21c79f6ea5d0141ca5e360078e2477687be221c70c2e18d44144f89f2dfda",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-02-21T12:25:28Z",
    "title_canon_sha256": "2449814ecdb0c06fa1f1fd7d701928f5a75fc65b5bcbafe10090d0d2b64fb21e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07540",
    "kind": "arxiv",
    "version": 1
  }
}