Pith Number

pith:M6NLP6SQ

pith:2021:M6NLP6SQNSI5GP7GFYLJL4FTM3

not attested not anchored not stored refs pending

Simutaneously vanishing higher derived limits without large cardinals

Chris Lambie-Hanson, Jeffrey Bergfalk, Michael Hru\v{s}\'ak

arxiv:2102.06699 v1 · 2021-02-12 · math.LO · 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{M6NLP6SQNSI5GP7GFYLJL4FTM3}

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	2026-07-05T02:14:50.427426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

679ab7fa506c91d33fe62e1695f0b366eec5d98f1894e7d1c6e23487b32ebeed

Aliases

arxiv: 2102.06699 · arxiv_version: 2102.06699v1 · doi: 10.48550/arxiv.2102.06699 · pith_short_12: M6NLP6SQNSI5 · pith_short_16: M6NLP6SQNSI5GP7G · pith_short_8: M6NLP6SQ

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/M6NLP6SQNSI5GP7GFYLJL4FTM3 \
  | 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: 679ab7fa506c91d33fe62e1695f0b366eec5d98f1894e7d1c6e23487b32ebeed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9c6e1e1c7f746b5e859f80c28645a231abf75964632c451ddda846f6cb279b5c",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2021-02-12T18:56:53Z",
    "title_canon_sha256": "6cf248efd041abdb203e860a1b90bde2cfa31eff2860f4e49d009d4174c56460"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06699",
    "kind": "arxiv",
    "version": 1
  }
}