Pith Number

pith:OWQNYNAZ

pith:2018:OWQNYNAZAIKPP7536QM7XNNHJK

not attested not anchored not stored refs pending

A simple embedded discrete fracture-matrix model for a coupled flow and transport problem in porous media

Lars H. Ods{\ae}ter, Mats G. Larson, Trond Kvamsdal

arxiv:1803.03423 v1 · 2018-03-09 · math.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OWQNYNAZAIKPP7536QM7XNNHJK}

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	2026-05-18T00:21:39.630177Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75a0dc34190214f7ffbbf419fbb5a74a866d01a91efc88f6830864f019d1ddab

Aliases

arxiv: 1803.03423 · arxiv_version: 1803.03423v1 · doi: 10.48550/arxiv.1803.03423 · pith_short_12: OWQNYNAZAIKP · pith_short_16: OWQNYNAZAIKPP753 · pith_short_8: OWQNYNAZ

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/OWQNYNAZAIKPP7536QM7XNNHJK \
  | 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: 75a0dc34190214f7ffbbf419fbb5a74a866d01a91efc88f6830864f019d1ddab

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "28e68cd5b206b36cc703da32e39618d5611d07a7d4f7f3db930ae8cfb521728b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-03-09T09:03:24Z",
    "title_canon_sha256": "c171e30dd03c2d7417762f2e757f6a380c4e58b0dc7820b4db53dfdb1a749f1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03423",
    "kind": "arxiv",
    "version": 1
  }
}