Pith Number

pith:FTX2GLL7

pith:2008:FTX2GLL7WXC7REPFKXO5ZWUQPM

not attested not anchored not stored refs pending

Intersection homology with field coefficients: $K$-Witt spaces and $K$-Witt bordism

Greg Friedman

arxiv:0804.1933 v2 · 2008-04-11 · 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{FTX2GLL7WXC7REPFKXO5ZWUQPM}

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	2026-05-18T04:25:28.870797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2cefa32d7fb5c5f891e555dddcda907b3480405d0392e0aa616ba79096765134

Aliases

arxiv: 0804.1933 · arxiv_version: 0804.1933v2 · doi: 10.48550/arxiv.0804.1933 · pith_short_12: FTX2GLL7WXC7 · pith_short_16: FTX2GLL7WXC7REPF · pith_short_8: FTX2GLL7

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/FTX2GLL7WXC7REPFKXO5ZWUQPM \
  | 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: 2cefa32d7fb5c5f891e555dddcda907b3480405d0392e0aa616ba79096765134

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "44fa2566fdd317f39f2108d45a97356cb465907ba8e2230ce469d710553af157",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-04-11T16:28:53Z",
    "title_canon_sha256": "194f01cdb71ccf61baefc8043aea347a76a5d92ce7b10c2957e90f5a76cd1878"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1933",
    "kind": "arxiv",
    "version": 2
  }
}