Pith Number

pith:YAJ6MFFF

pith:2018:YAJ6MFFF7KYAFKU7ZBPU72NAYT

not attested not anchored not stored refs pending

An efficient numerical method for estimating the average free boundary velocity in an inhomogeneous Hele-Shaw problem

Irma Palupi, Norbert Pozar

arxiv:1808.03044 v1 · 2018-08-09 · math.NA · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YAJ6MFFF7KYAFKU7ZBPU72NAYT}

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	2026-05-18T00:08:30.343726Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c013e614a5fab002aa9fc85f4fe9a0c4c13c60e572c3a7b2786be7482a49067f

Aliases

arxiv: 1808.03044 · arxiv_version: 1808.03044v1 · doi: 10.48550/arxiv.1808.03044 · pith_short_12: YAJ6MFFF7KYA · pith_short_16: YAJ6MFFF7KYAFKU7 · pith_short_8: YAJ6MFFF

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/YAJ6MFFF7KYAFKU7ZBPU72NAYT \
  | 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: c013e614a5fab002aa9fc85f4fe9a0c4c13c60e572c3a7b2786be7482a49067f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0431053f9f65f861320c0ae12e741cf029d8f3f71b2873f0290524c64d81049",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-09T07:25:05Z",
    "title_canon_sha256": "260a91c8f75f90b948c46e80855bc81cccdf3a2722a21ff4fd3bf81561004fd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03044",
    "kind": "arxiv",
    "version": 1
  }
}