Pith Number

pith:7G2RBT4L

pith:2019:7G2RBT4LL67JW6I4WNIR3VDEB3

not attested not anchored not stored refs pending

Non-uniqueness for a critical heat equation in two dimensions with singular data

Bernhard Ruf, Elide Terraneo, Norisuke Ioku

arxiv:1903.08013 v1 · 2019-03-19 · 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{7G2RBT4LL67JW6I4WNIR3VDEB3}

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	2026-05-17T23:50:53.183995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9b510cf8b5fbe9b791cb3511dd4640efe72291509bb667647c79131d770372f

Aliases

arxiv: 1903.08013 · arxiv_version: 1903.08013v1 · doi: 10.48550/arxiv.1903.08013 · pith_short_12: 7G2RBT4LL67J · pith_short_16: 7G2RBT4LL67JW6I4 · pith_short_8: 7G2RBT4L

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/7G2RBT4LL67JW6I4WNIR3VDEB3 \
  | 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: f9b510cf8b5fbe9b791cb3511dd4640efe72291509bb667647c79131d770372f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bbe5ab2e6e6e29a8269132ef15db817639aaa5a02bdbd93992e6b4641a0b6bf6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2019-03-19T14:20:11Z",
    "title_canon_sha256": "912e95b6aa07f017290e6db21984eb10e7f1420bda7f75013170c9d0aff1787e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08013",
    "kind": "arxiv",
    "version": 1
  }
}