Pith Number

pith:KBRAS63V

pith:2008:KBRAS63V4TAP474KKX7TSMA5WR

not attested not anchored not stored refs pending

Intersection homology Kunneth theorems

Greg Friedman

arxiv:0808.1750 v1 · 2008-08-12 · math.GT · 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{KBRAS63V4TAP474KKX7TSMA5WR}

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	2026-05-18T04:25:28.841869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5062097b75e4c0fe7f8a55ff39301db46adacd5c501b0b6189907e6e5583a96a

Aliases

arxiv: 0808.1750 · arxiv_version: 0808.1750v1 · doi: 10.48550/arxiv.0808.1750 · pith_short_12: KBRAS63V4TAP · pith_short_16: KBRAS63V4TAP474K · pith_short_8: KBRAS63V

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/KBRAS63V4TAP474KKX7TSMA5WR \
  | 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: 5062097b75e4c0fe7f8a55ff39301db46adacd5c501b0b6189907e6e5583a96a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "464f8b49792dd549862d94d8381629cf439eff63cf5d706e2ac97c6c7efce38d",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-08-12T23:07:04Z",
    "title_canon_sha256": "f3eef1aea13c528d373973264b0f2bf340871e22a9860c2b6aae4e87ec4be145"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0808.1750",
    "kind": "arxiv",
    "version": 1
  }
}