Pith Number

pith:PVNQFFYZ

pith:2018:PVNQFFYZID33DB2BG4BX6VZCQZ

not attested not anchored not stored refs pending

Analysis of fully discrete FEM for miscible displacement in porous media with Bear--Scheidegger diffusion tensor

Buyang Li, Weiwei Sun, Wentao Cai, Yanping Lin

arxiv:1809.03240 v1 · 2018-09-10 · 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{PVNQFFYZID33DB2BG4BX6VZCQZ}

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	2026-05-18T00:06:09.536140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d5b02971940f7b1874137037f57228672b69c9de74584f5894a3a81b29f3d94

Aliases

arxiv: 1809.03240 · arxiv_version: 1809.03240v1 · doi: 10.48550/arxiv.1809.03240 · pith_short_12: PVNQFFYZID33 · pith_short_16: PVNQFFYZID33DB2B · pith_short_8: PVNQFFYZ

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/PVNQFFYZID33DB2BG4BX6VZCQZ \
  | 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: 7d5b02971940f7b1874137037f57228672b69c9de74584f5894a3a81b29f3d94

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b572c4f85429583283f6533e2879dbae370e6038b03d5be8102ba9994bbb9345",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-09-10T11:31:08Z",
    "title_canon_sha256": "3cd2ec532c3916ddbf5fa010814aefebe4dd4b537808b3f5bed0f896e1a27e34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03240",
    "kind": "arxiv",
    "version": 1
  }
}