Pith Number

pith:C2P2VUYQ

pith:2016:C2P2VUYQIHDJX353RTIPNALGXA

not attested not anchored not stored refs pending

The Muskat problem in 2D: equivalence of formulations, well-posedness, and regularity results

Bogdan-Vasile Matioc

arxiv:1610.05546 v2 · 2016-10-18 · 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{C2P2VUYQIHDJX353RTIPNALGXA}

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	2026-05-18T00:03:50.464658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

169faad31041c69befbb8cd0f68166b810b99544a884bc80ad08e18bb67b786e

Aliases

arxiv: 1610.05546 · arxiv_version: 1610.05546v2 · doi: 10.48550/arxiv.1610.05546 · pith_short_12: C2P2VUYQIHDJ · pith_short_16: C2P2VUYQIHDJX353 · pith_short_8: C2P2VUYQ

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/C2P2VUYQIHDJX353RTIPNALGXA \
  | 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: 169faad31041c69befbb8cd0f68166b810b99544a884bc80ad08e18bb67b786e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b69abdfd3d348da4a502a472661eba8911ac5e887e38125f45db6f4891e1e5fb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2016-10-18T11:41:41Z",
    "title_canon_sha256": "b31ea5786610abddd164d020aa77726545dd72c7c35f1f8370c35fc35bd511f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1610.05546",
    "kind": "arxiv",
    "version": 2
  }
}