Pith Number

pith:EEWY5IBR

pith:2015:EEWY5IBRVLZI5DGKLXJZSOQD6Q

not attested not anchored not stored refs pending

Almost quasi-isometries and more non-exact groups

Martin Finn-Sell

arxiv:1506.08424 v1 · 2015-06-28 · math.GR · math.MG · math.OA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EEWY5IBRVLZI5DGKLXJZSOQD6Q}

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	2026-05-18T01:37:45.351249Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

212d8ea031aaf28e8cca5dd3993a03f4160304889dcba1143e09e805ee13ff46

Aliases

arxiv: 1506.08424 · arxiv_version: 1506.08424v1 · doi: 10.48550/arxiv.1506.08424 · pith_short_12: EEWY5IBRVLZI · pith_short_16: EEWY5IBRVLZI5DGK · pith_short_8: EEWY5IBR

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/EEWY5IBRVLZI5DGKLXJZSOQD6Q \
  | 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: 212d8ea031aaf28e8cca5dd3993a03f4160304889dcba1143e09e805ee13ff46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "20e5ea03ab17b01b572c248dbd921b8a3c337ee95c7c700282a0c955cfaa1f73",
    "cross_cats_sorted": [
      "math.MG",
      "math.OA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2015-06-28T16:50:21Z",
    "title_canon_sha256": "0d697027987422fc4496b0f44fead0cd4308db8e97203e39fe5c10b7d2700dd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08424",
    "kind": "arxiv",
    "version": 1
  }
}