Pith Number

pith:HP4PESXC

pith:2010:HP4PESXC6UGC7XHC66VL6NDNML

not attested not anchored not stored refs pending

Existence of solutions and separation from singularities for a class of fourth order degenerate parabolic equations

Giulio Schimperna, Sergey Zelik

arxiv:1009.3148 v1 · 2010-09-16 · 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{HP4PESXC6UGC7XHC66VL6NDNML}

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	2026-05-18T04:40:46.930676Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3bf8f24ae2f50c2fdce2f7aabf346d62fcb9fa606564e4fff351fe4c4ffaf3c0

Aliases

arxiv: 1009.3148 · arxiv_version: 1009.3148v1 · doi: 10.48550/arxiv.1009.3148 · pith_short_12: HP4PESXC6UGC · pith_short_16: HP4PESXC6UGC7XHC · pith_short_8: HP4PESXC

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/HP4PESXC6UGC7XHC66VL6NDNML \
  | 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: 3bf8f24ae2f50c2fdce2f7aabf346d62fcb9fa606564e4fff351fe4c4ffaf3c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "898b417351cceac469c318871c10a2fb3e7788dc01a823bbfa695e5b4cbfaa14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2010-09-16T11:26:02Z",
    "title_canon_sha256": "474799e6bae40a5a16bbd097654478400ccafa3f83ea4ac84a9aa1616bf1e36d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1009.3148",
    "kind": "arxiv",
    "version": 1
  }
}