Pith Number

pith:L5A66AOO

pith:2012:L5A66AOORZZCTQK2XKKYBKVC4P

not attested not anchored not stored refs pending

Tangential Touch between the Free and the Fixed Boundary in a Semilinear Free Boundary Problem in Two Dimensions

Erik Lindgren, Mahmoudreza Bazarganzadeh

arxiv:1203.0923 v2 · 2012-03-05 · 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{L5A66AOORZZCTQK2XKKYBKVC4P}

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	2026-05-18T01:58:14.948310Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5f41ef01ce8e7229c15aba9580aaa2e3fde07e38ec0029a3897b404185540796

Aliases

arxiv: 1203.0923 · arxiv_version: 1203.0923v2 · doi: 10.48550/arxiv.1203.0923 · pith_short_12: L5A66AOORZZC · pith_short_16: L5A66AOORZZCTQK2 · pith_short_8: L5A66AOO

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/L5A66AOORZZCTQK2XKKYBKVC4P \
  | 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: 5f41ef01ce8e7229c15aba9580aaa2e3fde07e38ec0029a3897b404185540796

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "171ac7a6a9be350d2ea5e0d7971c382b7a12057d716d1e76601945b7bb4481df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-03-05T14:02:11Z",
    "title_canon_sha256": "5eb259aacc13cf989d5afcbe2a29ea25e81c241c12824dba083c98d7c947595f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0923",
    "kind": "arxiv",
    "version": 2
  }
}