Pith Number

pith:2NZOYFAM

pith:2016:2NZOYFAMSZLY3QYKBXHP7Z7XL2

not attested not anchored not stored refs pending

A Study on Moving Mesh Finite Element Solution of the Porous Medium Equation

Cuong Ngo, Weizhang Huang

arxiv:1605.03570 v2 · 2016-05-11 · 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{2NZOYFAMSZLY3QYKBXHP7Z7XL2}

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	2026-05-18T00:53:40.304654Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d372ec140c96578dc30a0dceffe7f75e8f36b4f21cea46449c3f4ff072a9499a

Aliases

arxiv: 1605.03570 · arxiv_version: 1605.03570v2 · doi: 10.48550/arxiv.1605.03570 · pith_short_12: 2NZOYFAMSZLY · pith_short_16: 2NZOYFAMSZLY3QYK · pith_short_8: 2NZOYFAM

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/2NZOYFAMSZLY3QYKBXHP7Z7XL2 \
  | 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: d372ec140c96578dc30a0dceffe7f75e8f36b4f21cea46449c3f4ff072a9499a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e74313dc3ac70c0df3838b5c2c242cafc3ab090b9b27c54ec34bd4ac2ed19713",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-05-11T19:34:01Z",
    "title_canon_sha256": "ca63cc8e34996da73728852d9173258690c1b8fb8661e84eeb7f8f5a66ef10a3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.03570",
    "kind": "arxiv",
    "version": 2
  }
}