Pith Number

pith:FQMIGF2C

pith:2012:FQMIGF2C56IXDUMNTH5T5XENPD

not attested not anchored not stored refs pending

The Singular Set of Higher Dimensional Unstable Obstacle Type Problems

Georg Weiss, Henrik Shahgholian, John Andersson

arxiv:1207.3398 v1 · 2012-07-14 · 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{FQMIGF2C56IXDUMNTH5T5XENPD}

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	2026-05-18T03:51:01.292134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c18831742ef9171d18d99fb3edc8d78cd08948ce95a78c7392b39ed392ec803

Aliases

arxiv: 1207.3398 · arxiv_version: 1207.3398v1 · doi: 10.48550/arxiv.1207.3398 · pith_short_12: FQMIGF2C56IX · pith_short_16: FQMIGF2C56IXDUMN · pith_short_8: FQMIGF2C

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/FQMIGF2C56IXDUMNTH5T5XENPD \
  | 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: 2c18831742ef9171d18d99fb3edc8d78cd08948ce95a78c7392b39ed392ec803

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3adf06ba3f4a47ff57c648ed42736a4db3d80020d78d547c3fe2e1db92f95e1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-07-14T07:00:13Z",
    "title_canon_sha256": "7475253d8b625a6ac5a28310a0fc970c9007c535d25f27f5f503e0fa6a8a2046"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3398",
    "kind": "arxiv",
    "version": 1
  }
}