Pith Number

pith:WVPAO65D

pith:2020:WVPAO65D7RUX5UNNNCM5Z4ESSK

not attested not anchored not stored refs pending

A robustness measure for singular point and index estimation in discretized orientation and vector fields

Ivo F. Sbalzarini, Karl B. Hoffmann

arxiv:2009.14570 v1 · 2020-09-30 · cs.CV · cond-mat.soft · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WVPAO65D7RUX5UNNNCM5Z4ESSK}

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	2026-07-05T02:21:17.884872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b55e077ba3fc697ed1ad6899dcf092929aa9cd41eb54d97bb53779672eecf40f

Aliases

arxiv: 2009.14570 · arxiv_version: 2009.14570v1 · doi: 10.48550/arxiv.2009.14570 · pith_short_12: WVPAO65D7RUX · pith_short_16: WVPAO65D7RUX5UNN · pith_short_8: WVPAO65D

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/WVPAO65D7RUX5UNNNCM5Z4ESSK \
  | 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: b55e077ba3fc697ed1ad6899dcf092929aa9cd41eb54d97bb53779672eecf40f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a4c8ef9c7e650153fee3f07334fec4c257b7a771e9619c70334aa37c89bd61e6",
    "cross_cats_sorted": [
      "cond-mat.soft",
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2020-09-30T11:21:19Z",
    "title_canon_sha256": "d8b6eb3bb77f82519f7bb676f64ccc7c26b3e52d1d92035f3a5b3bcb702d3445"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.14570",
    "kind": "arxiv",
    "version": 1
  }
}