Pith Number

pith:YZCJBVP4

pith:2013:YZCJBVP4JBPAYDY4QI5OYIKSZQ

not attested not anchored not stored refs pending

Spectra and eigenvectors of the Segre transformation

Ilse Fischer, Martina Kubitzke

arxiv:1303.5358 v1 · 2013-03-21 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZCJBVP4JBPAYDY4QI5OYIKSZQ}

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	2026-05-18T03:30:13.063843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c64490d5fc485e0c0f1c823aec2152cc2c1558482601e6ac2494f5d8d32a1115

Aliases

arxiv: 1303.5358 · arxiv_version: 1303.5358v1 · doi: 10.48550/arxiv.1303.5358 · pith_short_12: YZCJBVP4JBPA · pith_short_16: YZCJBVP4JBPAYDY4 · pith_short_8: YZCJBVP4

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/YZCJBVP4JBPAYDY4QI5OYIKSZQ \
  | 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: c64490d5fc485e0c0f1c823aec2152cc2c1558482601e6ac2494f5d8d32a1115

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb7c8292deb230abc2a064be4526e6cfb2cb0789295acf4a2fa444847d944456",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-03-21T18:21:57Z",
    "title_canon_sha256": "193fd0dc9fb4af644b8e762ccc944df07d2ec772b8f6dad71cddbf2d264fd33d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.5358",
    "kind": "arxiv",
    "version": 1
  }
}