Pith Number

pith:QHWMEI7S

pith:2017:QHWMEI7SBCYMWQYN5K7LXDSBUO

not attested not anchored not stored refs pending

Selectively pseudocompact groups without non-trivial convergent sequences

Dmitri Shakhmatov, V\'ictor Hugo Ya\~nez

arxiv:1704.07740 v1 · 2017-04-25 · math.GN · 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{QHWMEI7SBCYMWQYN5K7LXDSBUO}

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	2026-05-17T23:57:32.935536Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81ecc223f208b0cb430deabebb8e41a3bcbfb686f8f4fc364afc97af41eab343

Aliases

arxiv: 1704.07740 · arxiv_version: 1704.07740v1 · doi: 10.48550/arxiv.1704.07740 · pith_short_12: QHWMEI7SBCYM · pith_short_16: QHWMEI7SBCYMWQYN · pith_short_8: QHWMEI7S

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/QHWMEI7SBCYMWQYN5K7LXDSBUO \
  | 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: 81ecc223f208b0cb430deabebb8e41a3bcbfb686f8f4fc364afc97af41eab343

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "533ddba715df96f17bf9f3a1ca732a73650fe32550acd11f0aea30141a276e85",
    "cross_cats_sorted": [
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GN",
    "submitted_at": "2017-04-25T15:34:07Z",
    "title_canon_sha256": "1a642be55539b3e3f4b50d6cf3936cba5f8ddc3aeb58f1af09445577d42a8c9e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.07740",
    "kind": "arxiv",
    "version": 1
  }
}