Pith Number

pith:TCNG444Q

pith:2012:TCNG444QWSJOHWL7JHTNOVSPUB

not attested not anchored not stored refs pending

The SL(2,C) Casson invariant for Dehn surgeries on two-bridge knots

Cynthia L. Curtis, Hans U. Boden

arxiv:1208.0357 v1 · 2012-08-01 · 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{TCNG444QWSJOHWL7JHTNOVSPUB}

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	2026-05-18T02:41:43.015564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

989a6e7390b492e3d97f49e6d7564fa0445e0c9a9e0c408859eee30277fb194d

Aliases

arxiv: 1208.0357 · arxiv_version: 1208.0357v1 · doi: 10.48550/arxiv.1208.0357 · pith_short_12: TCNG444QWSJO · pith_short_16: TCNG444QWSJOHWL7 · pith_short_8: TCNG444Q

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/TCNG444QWSJOHWL7JHTNOVSPUB \
  | 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: 989a6e7390b492e3d97f49e6d7564fa0445e0c9a9e0c408859eee30277fb194d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "218cd91290bb99f82801233ca25de8d6fb2660e27f10bb859b6850df770ca22d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2012-08-01T20:49:41Z",
    "title_canon_sha256": "a3daef58c0cd0978672535bba4b945c62f52592731010cfdb61a53d7e3d0292f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.0357",
    "kind": "arxiv",
    "version": 1
  }
}