Pith Number

pith:2EXB4OVW

pith:2011:2EXB4OVWPLE2UGU5OHKCUFEDNV

not attested not anchored not stored refs pending

Periodicity of hermitian K-groups

A.J. Berrick, M. Karoubi, P.A. {\O}stv{\ae}r

arxiv:1101.2056 v1 · 2011-01-11 · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2EXB4OVWPLE2UGU5OHKCUFEDNV}

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	2026-05-18T04:31:50.886367Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d12e1e3ab67ac9aa1a9d71d42a14836d54e95288f942bd51c59dd40fb7f51cf3

Aliases

arxiv: 1101.2056 · arxiv_version: 1101.2056v1 · doi: 10.48550/arxiv.1101.2056 · pith_short_12: 2EXB4OVWPLE2 · pith_short_16: 2EXB4OVWPLE2UGU5 · pith_short_8: 2EXB4OVW

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/2EXB4OVWPLE2UGU5OHKCUFEDNV \
  | 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: d12e1e3ab67ac9aa1a9d71d42a14836d54e95288f942bd51c59dd40fb7f51cf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8d4681d43ef13f1f2fef9b49780306479ed3f4c4f4f59144c9c1981d3fdaca2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.KT",
    "submitted_at": "2011-01-11T07:34:27Z",
    "title_canon_sha256": "cae2df9c111e5881d1b80a0bcf9e4ec26d157879e147279ef8100ce060af48f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2056",
    "kind": "arxiv",
    "version": 1
  }
}