Pith Number

pith:DHNIHUIB

pith:2026:DHNIHUIBIPN2PH3IUR2U6K22JA

not attested not anchored not stored refs pending

Secondary Ext of the Fiber of $Sq^n$ and the Secondary Adams Spectral Sequence

Dang Vo Phuc

arxiv:2605.18906 v1 · 2026-05-17 · 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{DHNIHUIBIPN2PH3IUR2U6K22JA}

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	2026-05-20T00:06:31.422425Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19da83d10143dba79f68a4754f2b5a482818dd67b0758e542a21c8de39ca1925

Aliases

arxiv: 2605.18906 · arxiv_version: 2605.18906v1 · doi: 10.48550/arxiv.2605.18906 · pith_short_12: DHNIHUIBIPN2 · pith_short_16: DHNIHUIBIPN2PH3I · pith_short_8: DHNIHUIB

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/DHNIHUIBIPN2PH3IUR2U6K22JA \
  | 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: 19da83d10143dba79f68a4754f2b5a482818dd67b0758e542a21c8de39ca1925

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fa654f0a9a0ad861d27f24ebb16ee76c782c66f6bd39bbf3facd656b1951ff4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2026-05-17T14:52:43Z",
    "title_canon_sha256": "785ceb2af3a7859147ec56c3b7d1ab9feb48bfd55b845ebc27161f7dde17daae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18906",
    "kind": "arxiv",
    "version": 1
  }
}