Pith Number

pith:57FB67KO

pith:2015:57FB67KOUGFOYQUV7GEYIRST62

not attested not anchored not stored refs pending

A Free Boundary Problem for the Parabolic Poisson Kernel

Max Engelstein

arxiv:1510.05704 v1 · 2015-10-19 · 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{57FB67KOUGFOYQUV7GEYIRST62}

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	2026-05-18T00:35:05.640356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efca1f7d4ea18aec4295f989844653f68fa3664c0cfa94bafd08a0660763d147

Aliases

arxiv: 1510.05704 · arxiv_version: 1510.05704v1 · doi: 10.48550/arxiv.1510.05704 · pith_short_12: 57FB67KOUGFO · pith_short_16: 57FB67KOUGFOYQUV · pith_short_8: 57FB67KO

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/57FB67KOUGFOYQUV7GEYIRST62 \
  | 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: efca1f7d4ea18aec4295f989844653f68fa3664c0cfa94bafd08a0660763d147

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ca3ff3395e38a764b2a14829aa1f6fc063dc6655a8cb41627fb2c7be9afe30d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-10-19T22:14:07Z",
    "title_canon_sha256": "2f8688c555ed8792a3e59d8365742135302722d794ec6c1ac5f977f3df5c566c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.05704",
    "kind": "arxiv",
    "version": 1
  }
}