Pith Number

pith:CDONFNEN

pith:2026:CDONFNEN4HLEARJLJTDORQOXZ5

not attested not anchored not stored refs pending

Polycyclic groups and profinite isomorphism

Dan Segal

arxiv:2605.28310 v1 · 2026-05-27 · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CDONFNEN4HLEARJLJTDORQOXZ5}

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	2026-05-28T01:05:06.054895Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10dcd2b48de1d640452b4cc6e8c1d7cf656d6d8aad4b4820a82c2c9904b9b7f4

Aliases

arxiv: 2605.28310 · arxiv_version: 2605.28310v1 · doi: 10.48550/arxiv.2605.28310 · pith_short_12: CDONFNEN4HLE · pith_short_16: CDONFNEN4HLEARJL · pith_short_8: CDONFNEN

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/CDONFNEN4HLEARJLJTDORQOXZ5 \
  | 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: 10dcd2b48de1d640452b4cc6e8c1d7cf656d6d8aad4b4820a82c2c9904b9b7f4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8a5a46be545546dd073b0ce12307eba14b336da4b05dbe63d4c8daff467031b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2026-05-27T11:08:25Z",
    "title_canon_sha256": "46cfb1e845102b1c3c01a4fb48db2a4978facbc9ba89b37b206bceffbd5c2ee1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.28310",
    "kind": "arxiv",
    "version": 1
  }
}