Pith Number

pith:UUSKDRTF

pith:2014:UUSKDRTF2NNRVNQFJZ4UFOHJUT

not attested not anchored not stored refs pending

Large global-in-time solutions of the parabolic-parabolic Keller-Segel system on the plane

Grzegorz Karch, Ignacio Guerra, Piotr Biler

arxiv:1401.7650 v1 · 2014-01-29 · 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{UUSKDRTF2NNRVNQFJZ4UFOHJUT}

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	2026-05-18T03:00:40.245775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a524a1c665d35b1ab6054e7942b8e9a4c8cc64f4592a0a8a17dc7c920723566b

Aliases

arxiv: 1401.7650 · arxiv_version: 1401.7650v1 · doi: 10.48550/arxiv.1401.7650 · pith_short_12: UUSKDRTF2NNR · pith_short_16: UUSKDRTF2NNRVNQF · pith_short_8: UUSKDRTF

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/UUSKDRTF2NNRVNQFJZ4UFOHJUT \
  | 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: a524a1c665d35b1ab6054e7942b8e9a4c8cc64f4592a0a8a17dc7c920723566b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a368e4ddb7380476717f72ae228b2a66da6bb9805d0b82fe8467b72a118a45e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2014-01-29T20:29:48Z",
    "title_canon_sha256": "058152f5133090c71a043e8cdf4e39862b2b33b035b1cf5250ac70df30b84d06"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7650",
    "kind": "arxiv",
    "version": 1
  }
}