Pith Number

pith:R4Z5FBTG

pith:2014:R4Z5FBTGVTTFKNQRMFSCGDLIRT

not attested not anchored not stored refs pending

Quasi-automorphisms of the infinite rooted 2-edge-coloured binary tree

Brita E. A. Nucinkis, Simon St John-Green

arxiv:1412.7715 v2 · 2014-12-24 · 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{R4Z5FBTGVTTFKNQRMFSCGDLIRT}

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	2026-05-18T00:39:53.207058Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8f33d28666ace65536116164230d688ccfe24b1077135d69403fb182ce33a041

Aliases

arxiv: 1412.7715 · arxiv_version: 1412.7715v2 · doi: 10.48550/arxiv.1412.7715 · pith_short_12: R4Z5FBTGVTTF · pith_short_16: R4Z5FBTGVTTFKNQR · pith_short_8: R4Z5FBTG

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/R4Z5FBTGVTTFKNQRMFSCGDLIRT \
  | 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: 8f33d28666ace65536116164230d688ccfe24b1077135d69403fb182ce33a041

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10371dd5edb0966383fadc6e2c252f141e3606cf8ef96969c8345c32935c81e9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2014-12-24T17:16:29Z",
    "title_canon_sha256": "aec2afee02a66fa0b349181a50641f6cd7e46603b839de796a9384eb488c2869"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.7715",
    "kind": "arxiv",
    "version": 2
  }
}