Pith Number

pith:WIWY3SUX

pith:2009:WIWY3SUXIZDIFQV67TTAE2LWKA

not attested not anchored not stored refs pending

Correction to ""Topological nonrealization results via the Goodwillie tower approach to iterated loopspace homology"

Nicholas J. Kuhn

arxiv:0911.1785 v1 · 2009-11-09 · 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{WIWY3SUXIZDIFQV67TTAE2LWKA}

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	2026-05-18T02:41:51.054829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b22d8dca97464682c2befce602697650311236b8d066a45f411388972fd48080

Aliases

arxiv: 0911.1785 · arxiv_version: 0911.1785v1 · doi: 10.48550/arxiv.0911.1785 · pith_short_12: WIWY3SUXIZDI · pith_short_16: WIWY3SUXIZDIFQV6 · pith_short_8: WIWY3SUX

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/WIWY3SUXIZDIFQV67TTAE2LWKA \
  | 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: b22d8dca97464682c2befce602697650311236b8d066a45f411388972fd48080

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6818caf8bb0b7c2a2f43d4888a7c907d38d7f87661556ee252b65bee6ca0f168",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2009-11-09T21:22:15Z",
    "title_canon_sha256": "101550dff78b47e710b6e7e950395e21bf3dd82e2d05066891f655bac167d5c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1785",
    "kind": "arxiv",
    "version": 1
  }
}