Pith Number

pith:DES33BTQ

pith:2014:DES33BTQDDZDJH5X2MIRZ5U5LX

not attested not anchored not stored refs pending

Combinatorial covers and vanishing of cohomology

Alexander I. Suciu, Graham Denham, Sergey Yuzvinsky

arxiv:1411.7981 v2 · 2014-11-28 · math.AT · math.AG · 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{DES33BTQDDZDJH5X2MIRZ5U5LX}

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	2026-05-18T01:07:21.288461Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1925bd867018f2349fb7d3111cf69d5dd3a11477261e9d084d839dc5ae840b0a

Aliases

arxiv: 1411.7981 · arxiv_version: 1411.7981v2 · doi: 10.48550/arxiv.1411.7981 · pith_short_12: DES33BTQDDZD · pith_short_16: DES33BTQDDZDJH5X · pith_short_8: DES33BTQ

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/DES33BTQDDZDJH5X2MIRZ5U5LX \
  | 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: 1925bd867018f2349fb7d3111cf69d5dd3a11477261e9d084d839dc5ae840b0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3480b7a2166819341d4b51a7864ea8d3351f684ceae45d075fa25db7e80777b",
    "cross_cats_sorted": [
      "math.AG",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2014-11-28T19:31:50Z",
    "title_canon_sha256": "3ec98b4b8929cc22d7a356c7adadc32baa50a8e52f86f5097c8a93147aabcf8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1411.7981",
    "kind": "arxiv",
    "version": 2
  }
}