Pith Number

pith:PUQBZCPF

pith:2019:PUQBZCPFVTJJLLVPRCWLPGRQHC

not attested not anchored not stored refs pending

Computing Nonlinear Eigenfunctions via Gradient Flow Extinction

Daniel Tenbrinck, Leon Bungert, Martin Burger

arxiv:1902.10414 v1 · 2019-02-27 · math.NA · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PUQBZCPFVTJJLLVPRCWLPGRQHC}

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	2026-05-17T23:52:30.905017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d201c89e5acd295aeaf88acb79a3038807a53a3f2244a8739fdddf3efa6a8f2

Aliases

arxiv: 1902.10414 · arxiv_version: 1902.10414v1 · doi: 10.48550/arxiv.1902.10414 · pith_short_12: PUQBZCPFVTJJ · pith_short_16: PUQBZCPFVTJJLLVP · pith_short_8: PUQBZCPF

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/PUQBZCPFVTJJLLVPRCWLPGRQHC \
  | 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: 7d201c89e5acd295aeaf88acb79a3038807a53a3f2244a8739fdddf3efa6a8f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "272d0bb30b420eaccf0567fd4dc2b189dc9cd86a75d89ecf3801f279f926246e",
    "cross_cats_sorted": [
      "cs.CV"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-27T09:50:38Z",
    "title_canon_sha256": "f51b310c7a56a639d01af0e69438b10fd7d8f8045bb83723b518ce11fbcb9946"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.10414",
    "kind": "arxiv",
    "version": 1
  }
}