Pith Number

pith:U7TNPHF6

pith:2015:U7TNPHF6DH2FJLTWNF5T4I3BDW

not attested not anchored not stored refs pending

Poincare Duality Complexes with Highly Connected Universal Covers

Beatrice Bleile, Imre Bokor

arxiv:1509.01928 v1 · 2015-09-07 · 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{U7TNPHF6DH2FJLTWNF5T4I3BDW}

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	2026-05-17T23:58:05.947833Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7e6d79cbe19f454ae76697b3e23611d811e6cff4ca726208a839a6ff7f95d2e

Aliases

arxiv: 1509.01928 · arxiv_version: 1509.01928v1 · doi: 10.48550/arxiv.1509.01928 · pith_short_12: U7TNPHF6DH2F · pith_short_16: U7TNPHF6DH2FJLTW · pith_short_8: U7TNPHF6

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/U7TNPHF6DH2FJLTWNF5T4I3BDW \
  | 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: a7e6d79cbe19f454ae76697b3e23611d811e6cff4ca726208a839a6ff7f95d2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c39eefd861cf359db11b59cf46398706162f649b483086a3aec25734d33d84a2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2015-09-07T07:03:25Z",
    "title_canon_sha256": "bc9ce5ebb9c831f3b0f67a0913bd0ce62696a87219cf40ffb355c2f85a2a70e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01928",
    "kind": "arxiv",
    "version": 1
  }
}