Pith Number

pith:ZOVWSDQF

pith:2003:ZOVWSDQFGG4HMSEUDYR6VTOT6G

not attested not anchored not stored refs pending

Eta invariants as sliceness obstructions and their relation to Casson-Gordon invariants

Stefan Friedl

arxiv:math/0305402 v3 · 2003-05-28 · math.GT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZOVWSDQFGG4HMSEUDYR6VTOT6G}

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	2026-05-18T02:41:32.684288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbab690e0531b87648941e23eacdd3f1ad46b13e4888bab4c70ead18c388c3f7

Aliases

arxiv: math/0305402 · arxiv_version: math/0305402v3 · doi: 10.48550/arxiv.math/0305402 · pith_short_12: ZOVWSDQFGG4H · pith_short_16: ZOVWSDQFGG4HMSEU · pith_short_8: ZOVWSDQF

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/ZOVWSDQFGG4HMSEUDYR6VTOT6G \
  | 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: cbab690e0531b87648941e23eacdd3f1ad46b13e4888bab4c70ead18c388c3f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d41ea7bcbfb986b68d5b12217ab38af592ddf538d1be487623712e853f9abc1",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.GT",
    "submitted_at": "2003-05-28T15:33:38Z",
    "title_canon_sha256": "957115b498657b638876ca87390f2140d79a9e0a6f6ba34c4a1327995ed0fb80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0305402",
    "kind": "arxiv",
    "version": 3
  }
}