Pith Number

pith:IJ3HRLVW

pith:2004:IJ3HRLVWQKEVLZDLLJV5LJGFPT

not attested not anchored not stored refs pending

Singular chain intersection homology for traditional and super-perversities

Greg Friedman

arxiv:math/0407301 v1 · 2004-07-16 · 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{IJ3HRLVWQKEVLZDLLJV5LJGFPT}

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	2026-05-18T04:25:26.404358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

427678aeb6828955e46b5a6bd5a4c57ce9ecc20314a49e5df88c43a3c436a6a6

Aliases

arxiv: math/0407301 · arxiv_version: math/0407301v1 · doi: 10.48550/arxiv.math/0407301 · pith_short_12: IJ3HRLVWQKEV · pith_short_16: IJ3HRLVWQKEVLZDL · pith_short_8: IJ3HRLVW

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/IJ3HRLVWQKEVLZDLLJV5LJGFPT \
  | 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: 427678aeb6828955e46b5a6bd5a4c57ce9ecc20314a49e5df88c43a3c436a6a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3604983821311b430e650b73d4062e18889d4906c6a9c96e79247b355068131d",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2004-07-16T21:34:43Z",
    "title_canon_sha256": "79722fbd3a2f9b99b4e710419b1a8aa496e1f50d828cb5074c4302c1493c9d3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0407301",
    "kind": "arxiv",
    "version": 1
  }
}