Pith Number

pith:TIA6C45C

pith:2017:TIA6C45CL5ALYF7SZQCFUFXKOM

not attested not anchored not stored refs pending

\v{C}ech border homology and cohomology groups and some applications

Vladimer Baladze

arxiv:1703.07986 v1 · 2017-03-23 · 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{TIA6C45CL5ALYF7SZQCFUFXKOM}

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	2026-05-18T00:48:04.196674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a01e173a25f40bc17f2cc045a16ea733e3e9ed128877a35147193f748f14118

Aliases

arxiv: 1703.07986 · arxiv_version: 1703.07986v1 · doi: 10.48550/arxiv.1703.07986 · pith_short_12: TIA6C45CL5AL · pith_short_16: TIA6C45CL5ALYF7S · pith_short_8: TIA6C45C

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/TIA6C45CL5ALYF7SZQCFUFXKOM \
  | 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: 9a01e173a25f40bc17f2cc045a16ea733e3e9ed128877a35147193f748f14118

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "69305e34549e5bfdc903897c22a394bd478672b2958ad1b381009c15a8be8066",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-03-23T10:11:14Z",
    "title_canon_sha256": "ab45e05f024a96095cf083fc30e80121b4099027b553537b42697bdfe88faa88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07986",
    "kind": "arxiv",
    "version": 1
  }
}