Pith Number

pith:IYFQRH2G

pith:2022:IYFQRH2GN7GALQSMPCAUU3TSGX

not attested not anchored not stored refs pending

Trivial Massey Product in Bounded Cohomology

Domenico Marasco

arxiv:2209.00560 v1 · 2022-09-01 · math.GR · 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{IYFQRH2GN7GALQSMPCAUU3TSGX}

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.

Cited by

1 paper in Pith

Bounded cohomology of groups acting on trees with almost prescribed local actions

Receipt and verification

First computed	2026-07-05T04:53:51.422742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

460b089f466fcc05c24c78814a6e7235f954e1f22645ba82573c60d8f6c2b199

Aliases

arxiv: 2209.00560 · arxiv_version: 2209.00560v1 · doi: 10.48550/arxiv.2209.00560 · pith_short_12: IYFQRH2GN7GA · pith_short_16: IYFQRH2GN7GALQSM · pith_short_8: IYFQRH2G

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/IYFQRH2GN7GALQSMPCAUU3TSGX \
  | 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: 460b089f466fcc05c24c78814a6e7235f954e1f22645ba82573c60d8f6c2b199

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdaf43c8bf1fd315b2eb54170e88a164570a874c3d1aba5ffd92ee8dd7ae1699",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2022-09-01T16:05:11Z",
    "title_canon_sha256": "e19714821d5a8a13289affe49e52670b632803e3355c0e64d4cb9352ddbdeb11"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.00560",
    "kind": "arxiv",
    "version": 1
  }
}