Pith Number

pith:7RM2DAYB

pith:2011:7RM2DAYBUBXW5PF3SCUQAH4E47

not attested not anchored not stored refs pending

A note on homotopy types of connected components of Map(S^4,BSU(2))

Mitsunobu Tsutaya

arxiv:1101.4278 v1 · 2011-01-22 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7RM2DAYBUBXW5PF3SCUQAH4E47}

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	2026-05-18T02:59:45.600674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc59a18301a06f6ebcbb90a9001f84e7c0790858b9f3bed623083ff0119e4348

Aliases

arxiv: 1101.4278 · arxiv_version: 1101.4278v1 · doi: 10.48550/arxiv.1101.4278 · pith_short_12: 7RM2DAYBUBXW · pith_short_16: 7RM2DAYBUBXW5PF3 · pith_short_8: 7RM2DAYB

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/7RM2DAYBUBXW5PF3SCUQAH4E47 \
  | 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: fc59a18301a06f6ebcbb90a9001f84e7c0790858b9f3bed623083ff0119e4348

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "543fe86c31465076546e750c47b59754f69f58f9cd3a95ebcce26ca9780f1ac5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-01-22T10:57:39Z",
    "title_canon_sha256": "b6b8f3152e76f39bdea0091b212587af6e5b32567117b546197c40a4e921978e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.4278",
    "kind": "arxiv",
    "version": 1
  }
}