Pith Number

pith:ANSG66DH

pith:2019:ANSG66DHXD7IISSC2RI3QTUML2

not attested not anchored not stored refs pending

Matrices dropping rank in codimension one and critical loci in computer vision

Cristina Turrini, GianMario Besana, Marina Bertolini, Roberto Notari

arxiv:1902.00376 v1 · 2019-02-01 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ANSG66DHXD7IISSC2RI3QTUML2}

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.

Cited by

1 paper in Pith

The Rank of Trifocal Grassmann Tensors

Receipt and verification

First computed	2026-05-17T23:54:57.613152Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03646f7867b8fe844a42d451b84e8c5e98cdcf076553cb098496c0537ad4f2c1

Aliases

arxiv: 1902.00376 · arxiv_version: 1902.00376v1 · doi: 10.48550/arxiv.1902.00376 · pith_short_12: ANSG66DHXD7I · pith_short_16: ANSG66DHXD7IISSC · pith_short_8: ANSG66DH

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/ANSG66DHXD7IISSC2RI3QTUML2 \
  | 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: 03646f7867b8fe844a42d451b84e8c5e98cdcf076553cb098496c0537ad4f2c1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "00bfb26fed89ed704fbf1564361ef81d0d2d697d70d6f5d6b6d2e10d602fd86e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-02-01T14:47:43Z",
    "title_canon_sha256": "1d306820b661c877e486e8a66e5bb59a2489fea54f6ef89e91ce9157e3a8b53a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00376",
    "kind": "arxiv",
    "version": 1
  }
}