Pith Number

pith:R3STJ7KM

pith:2018:R3STJ7KMM52GKWA2ZQYUNH25FM

not attested not anchored not stored refs pending

Composable block solvers for the four-field double porosity/permeability model

J. Chang, K. B. Nakshatrala, M. G. Knepley, M. S. Joshaghani

arxiv:1808.08328 v1 · 2018-08-24 · cs.CE · cs.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{R3STJ7KMM52GKWA2ZQYUNH25FM}

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	2026-05-17T23:47:30.476098Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ee534fd4c677465581acc31469f5d2b0dbbf4eac9e4dbc5293fd700c7c78525

Aliases

arxiv: 1808.08328 · arxiv_version: 1808.08328v1 · doi: 10.48550/arxiv.1808.08328 · pith_short_12: R3STJ7KMM52G · pith_short_16: R3STJ7KMM52GKWA2 · pith_short_8: R3STJ7KM

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/R3STJ7KMM52GKWA2ZQYUNH25FM \
  | 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: 8ee534fd4c677465581acc31469f5d2b0dbbf4eac9e4dbc5293fd700c7c78525

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6a8a3f74d1c9dcbe4d685baa5c90549b0c7bce7f4871e091368fea0c168836d",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2018-08-24T22:38:19Z",
    "title_canon_sha256": "113f6f8a8079b5aa2c134d1ef48ebbdd40e6c417b2c3ed33530a27be7a7e384f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08328",
    "kind": "arxiv",
    "version": 1
  }
}