Pith Number

pith:2FH4O5BW

pith:2008:2FH4O5BWWJSIBXLESOVAO7VZ2H

not attested not anchored not stored refs pending

Splitting the spectral flow and the SU(3) Casson invariant for spliced sums

Benjamin Himpel, Hans U. Boden

arxiv:0804.1350 v1 · 2008-04-08 · 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{2FH4O5BWWJSIBXLESOVAO7VZ2H}

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	2026-05-18T02:38:19.151868Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d14fc77436b26480dd6493aa077eb9d1d74e962183b220b045623854d399b8c9

Aliases

arxiv: 0804.1350 · arxiv_version: 0804.1350v1 · doi: 10.48550/arxiv.0804.1350 · pith_short_12: 2FH4O5BWWJSI · pith_short_16: 2FH4O5BWWJSIBXLE · pith_short_8: 2FH4O5BW

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/2FH4O5BWWJSIBXLESOVAO7VZ2H \
  | 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: d14fc77436b26480dd6493aa077eb9d1d74e962183b220b045623854d399b8c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7f2f0838fafe7692f7cbb65dcf834a48089159fe51b4569284ee14118dd9809",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2008-04-08T23:42:46Z",
    "title_canon_sha256": "be2b7ed7d1c3da32b6803db4dbd5f37d1648dc37bf16c35224032cbf840db0cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1350",
    "kind": "arxiv",
    "version": 1
  }
}