Pith Number

pith:ETT73Y4F

pith:2007:ETT73Y4FLIFSXKKSXOUWN3FUUG

not attested not anchored not stored refs pending

Intersection homology of stratified fibrations and neighborhoods

Greg Friedman

arxiv:math/0701112 v1 · 2007-01-03 · 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{ETT73Y4FLIFSXKKSXOUWN3FUUG}

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	2026-05-18T04:25:26.319377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24e7fde3855a0b2ba952bba966ecb4a199d76dc9d102864f866ac411e79edc49

Aliases

arxiv: math/0701112 · arxiv_version: math/0701112v1 · doi: 10.48550/arxiv.math/0701112 · pith_short_12: ETT73Y4FLIFS · pith_short_16: ETT73Y4FLIFSXKKS · pith_short_8: ETT73Y4F

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/ETT73Y4FLIFSXKKSXOUWN3FUUG \
  | 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: 24e7fde3855a0b2ba952bba966ecb4a199d76dc9d102864f866ac411e79edc49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1fe27a0dfa7ddc67b43db86f13bc38083b58e68d3509d433875a2a9e0f26cd14",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2007-01-03T22:50:06Z",
    "title_canon_sha256": "44c3858c4061d4654d778337d9b523a4ab08a71c6db654a41e0899c35a27a915"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0701112",
    "kind": "arxiv",
    "version": 1
  }
}