Pith Number

pith:QXF2PBPE

pith:2018:QXF2PBPEZTO4AGKY7KYGNG6EC4

not attested not anchored not stored refs pending

Explicit solution for a two--phase fractional Stefan problem with a heat flux condition at the fixed face

Domingo Tarzia, Sabrina Roscani

arxiv:1805.09172 v1 · 2018-05-23 · math.AP · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QXF2PBPEZTO4AGKY7KYGNG6EC4}

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	2026-05-18T00:15:08.309339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

85cba785e4ccddc01958fab0669bc4170f95dcff2a017e9c8bddbe0cbe45e0f6

Aliases

arxiv: 1805.09172 · arxiv_version: 1805.09172v1 · doi: 10.48550/arxiv.1805.09172 · pith_short_12: QXF2PBPEZTO4 · pith_short_16: QXF2PBPEZTO4AGKY · pith_short_8: QXF2PBPE

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/QXF2PBPEZTO4AGKY7KYGNG6EC4 \
  | 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: 85cba785e4ccddc01958fab0669bc4170f95dcff2a017e9c8bddbe0cbe45e0f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc5c671e83c066e828c608dca4342113e96db1b2901a8ebb662494a3b46ef4b2",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-05-23T13:48:31Z",
    "title_canon_sha256": "8a9652bd255cf69727617c83886397fd890a58f3f9ef45f63762270c0a00492c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.09172",
    "kind": "arxiv",
    "version": 1
  }
}